los angeles lyons argued november decided april respondent filed suit federal district petitioner city los angeles certain police officers alleging stopped officers traffic violation although offered resistance officers without provocation justification seized applied chokehold rendering unconscious causing damage larynx addition seeking damages complaint sought injunctive relief petitioner barring use chokeholds except situations proposed victim reasonably appeared threatening immediate use deadly force alleged pursuant petitioner authorization police officers routinely applied chokeholds situations threatened use deadly force numerous persons injured result thereof respondent justifiably feared future contact might police officers might result choked without provocation thus threatened impairment various rights protected federal constitution district ultimately entered preliminary injunction use chokeholds circumstances threaten death serious bodily injury appeals affirmed held case rendered moot even though pending city police authorities prohibited use certain type chokehold circumstances imposed moratorium use another type chokehold except circumstances deadly force authorized moratorium terms permanent thus intervening events irrevocably eradicated effects alleged misconduct pp federal courts without jurisdiction entertain respondent claim injunctive relief littleton rizzo goode pp satisfy case controversy requirement art iii plaintiff must show sustained immediately danger sustaining direct injury result challenged official conduct injury threat injury must real immediate conjectural hypothetical past exposure illegal conduct show present case controversy regarding injunctive relief unaccompanied continuing present adverse effects supra pp respondent failed demonstrate case controversy petitioner justify equitable relief sought respondent may illegally choked police presumably affording standing claim damages individual officers perhaps petitioner establish real immediate threat stopped traffic violation offense officer illegally choke unconsciousness without provocation chokeholds authorized counter resistance arrest suspect thwart effort escape future threat respondent petitioner policy conduct police officers real possibility encounter police either illegally resist arrest officers disobey instructions render unconscious without provocation equitable doctrine cessation challenged conduct seconds chokehold applied respondent bar injunction controlling since respondent lack standing rest termination police practice speculative nature claim experience injury result practice even continued rule claim become moot capable repetition yet evades review likewise inapposite pp even assuming respondent pending damages suit affords art iii standing seek injunction remedy claim arising events nevertheless equitable remedy unavailable respondent failed show irreparable injury requirement met showing real immediate threat plaintiff wronged respondent injury allegedly suffered go unrecompensed injury adequate damages remedy law recognition need proper balance state federal authority counsels restraint issuance injunctions state officers engaged administration state criminal laws absence irreparable injury great immediate pp white delivered opinion burger powell rehnquist joined marshall filed dissenting opinion brennan blackmun stevens joined post frederick merkin argued cause petitioner briefs ira reiner lewis unger michael mitchell argued cause respondent brief fred okrand charles sims briefs amici curiae urging reversal filed robert logan city san jose california et al myron dale national association chiefs police et al benjamin brown lamar shelley james brennan henry underhill roy bates george agnost roger cutler john dekker lee holt george knox walter powell william taube aaron wilson john witt max zall conard mattox charles rhyne national institute municipal law officers george franscell wayne schmidt courtney evans los angeles police protective league et al justice white delivered opinion issue whether respondent lyons satisfied prerequisites seeking injunctive relief federal district case began february respondent adolph lyons filed complaint damages injunction declaratory relief district central district california defendants city los angeles four police officers complaint alleged october lyons stopped defendant officers traffic vehicle code violation although lyons offered resistance threat whatsoever officers without provocation justification seized lyons applied chokehold either bar arm control hold control hold rendering unconscious causing damage larynx counts iv complaint sought damages officers city count principally concerned sought preliminary permanent injunction city barring use control holds count alleged city police officers pursuant authorization instruction encouragement defendant city los angeles regularly routinely apply choke holds innumerable situations threatened use deadly force whatsoever numerous persons injured result application chokeholds lyons others similarly situated threatened irreparable injury form bodily injury loss life lyons justifiably fears contact los angeles police officers may result choked strangled death without provocation justification legal excuse lyons alleged threatened impairment rights protected first fourth eighth fourteenth amendments injunctive relief sought use control holds except situations proposed victim said control reasonably appears threatening immediate use deadly force count vi sought declaratory relief city judgment use chokeholds absent threat immediate use deadly force per se violation various constitutional rights district order granted city motion partial judgment pleadings entered judgment city counts vi appeals reversed judgment city counts vi holding city objection despite decisions littleton rizzo goode lyons standing seek relief application chokeholds lyons city los angeles appeals held sufficient likelihood lyons stopped subjected unlawful use force constitute case controversy warrant issuance injunction injunction otherwise authorized denied certiorari remand lyons applied preliminary injunction lyons pressed count claim point see infra motion heard affidavits depositions government records district found lyons stopped traffic infringement without provocation legal justification officers involved applied chokehold resulted injuries plaintiff found department authorizes use holds situations one threatened death grievous bodily harm officers insufficiently trained use holds involves high risk injury death employed continued use situations neither death serious bodily injury threatened unconscionable civilized society concluded use violated lyons substantive due process rights fourteenth amendment preliminary injunction entered enjoining use carotid artery bar arm holds circumstances threaten death serious bodily injury improved training program regular reporting recordkeeping also ordered appeals affirmed brief per curiam opinion stating district abused discretion entering preliminary injunction granted certiorari reverse ii since grant certiorari circumstances pertinent case changed originally lyons complaint alleged least two deaths occurred result application chokeholds police first amended complaint alleged deaths occurred may five deaths may chief police los angeles prohibited use chokehold circumstances days later may board police commissioners imposed moratorium use chokehold except circumstances deadly force authorized based events june city filed memorandum suggesting question mootness reciting facts arguing case moot lyons turn filed motion dismiss writ certiorari improvidently granted denied motion reserved question mootness later consideration brief oral argument lyons reasserted position light changed conditions injunctive decree unnecessary longer subject threat injury urges preliminary injunction vacated city hand acknowledging subsequent events significantly changed posture case asserts case moot moratorium permanent may lifted time agree city case moot since moratorium terms permanent intervening events irrevocably eradicated effects alleged violation county los angeles davis nevertheless hold another reason federal courts without jurisdiction entertain lyons claim injunctive relief iii goes without saying seek invoke jurisdiction federal courts must satisfy threshold requirement imposed art iii constitution alleging actual case controversy flast cohen jenkins mckeithen opinion marshall plaintiffs must demonstrate personal stake outcome order assure concrete adverseness sharpens presentation issues necessary proper resolution constitutional questions baker carr abstract injury enough plaintiff must show sustained immediately danger sustaining direct injury result challenged official conduct injury threat injury must real immediate conjectural hypothetical see golden zwickler public workers mitchell maryland casualty pacific coal oil massachusetts mellon littleton dealt case brought class plaintiffs claiming subjected discriminatory enforcement criminal law among things county magistrate judge accused discriminatory conduct various respects sentencing members plaintiff class harshly defendants appeals reversed dismissal suit district ruling allegations proved appropriate injunction entered reversed failure complaint allege case controversy although claimed case particular members plaintiff class actually suffered alleged unconstitutional practices observed ast exposure illegal conduct show present case controversy regarding injunctive relief unaccompanied continuing present adverse effects past wrongs evidence bearing whether real immediate threat repeated injury prospect future injury rested likelihood plaintiffs arrested charged violations criminal law subjected bond proceedings trial sentencing petitioners ibid said plaintiffs standing plaintiffs proceed violate unchallenged law charged held answer tried proceedings petitioners subjected discriminatory practices petitioners alleged followed find case controversy circumstances threat plaintiffs sufficiently real immediate show existing controversy simply anticipate violating lawful criminal statutes tried offenses assumed plaintiffs conduct activities within law avoid prosecution conviction well exposure challenged course conduct said followed petitioners observed considerations obviously shade determining whether complaint sound basis equitable relief went hold even complaint presented existing case controversy adequate basis equitable relief petitioners demonstrated plaintiffs failed moreover establish basic requisites issuance equitable relief circumstances likelihood substantial immediate irreparable injury inadequacy remedies law already canvassed necessarily conjectural nature threatened injury plaintiffs allegedly subjected plaintiffs ever prosecuted face trial illegally sentenced available state federal procedures provide relief wrongful conduct alleged golden zwickler case arising analogous situation directly apposite zwickler sought declaratory judgment new york statute prohibiting anonymous handbills directly pertaining election campaigns unconstitutional although zwickler convicted statute sole concern related congressman left house representatives place new york likely candidate unanimous held unlikely zwickler subject statute case controversy sufficient immediacy reality present allow declaratory judgment zwickler assertion former congressman candidate congress hardly substitute evidence prospect immediacy reality lyons assertion may subject illegal chokehold create actual controversy must exist declaratory judgment entered note also per curiam opinion ashcroft mattis father boy killed police sought damages declaration missouri statute authorized police officers use deadly force apprehending person committed felony unconstitutional plaintiff alleged another son ever arrested brought attempt arrest suspicion felony might flee give appearance fleeing therefore danger killed defendants police officers ruled uch speculation insufficient establish existence present live controversy iv extension rizzo necessary hold respondent lyons failed demonstrate case controversy city justify equitable relief sought lyons standing seek injunction requested depended whether likely suffer future injury use chokeholds police officers count complaint alleged traffic stop choking incident five months lyons may illegally choked police october presumably affording lyons standing claim damages individual officers perhaps city nothing establish real immediate threat stopped traffic violation offense officer officers illegally choke unconsciousness without provocation resistance part additional allegation complaint police los angeles routinely apply chokeholds situations threatened use deadly force falls far short allegations necessary establish case controversy parties order establish actual controversy case lyons allege another encounter police also make incredible assertion either police officers los angeles always choke citizen happen encounter whether purpose arrest issuing citation questioning city ordered authorized police officers act manner although count alleged city authorized use control holds situations deadly force threatened indicate lyons might realistically threatened police officers acted within strictures city policy example chokeholds authorized used counter resistance arrest suspect thwart effort escape future threat lyons city policy conduct police officers real possibility encounter police either illegally resist arrest detention officers disobey instructions render unconscious without provocation rizzo allegations insufficient basis provide federal jurisdiction entertain count complaint apparently conclusion district dismissing lyons claim injunctive relief although district acted without opinion findings appeals interpreted action based lack standing rizzo lyons must held made insufficient showing police likely plaintiff several reasons infirm view appeals thought reliance rizzo misplaced reversed district first appeals thought lyons immediately threatened plaintiffs cases since according appeals lyons need stopped minor traffic violation subject strangleholds even assuming lyons stopped traffic violation reasonably near future untenable assert complaint made allegation strangleholds applied los angeles police every citizen stopped arrested regardless conduct person stopped agree odds lyons stopped traffic violation also subjected chokehold without provocation whatsoever sufficient make federal case equitable relief note five months elapsed october filing complaint yet allegation unfortunate encounters lyons police course may among countless encounters police citizens great city los angeles certain instances strangleholds illegally applied injury death unconstitutionally inflicted victim said however conjecture suggest every instance traffic stop arrest encounter police citizen police act unconstitutionally inflict injury without provocation legal excuse surely speculation assert either lyons involved one unfortunate instances arrested future provoke use chokehold resisting arrest attempting escape threatening deadly force serious bodily injury second appeals viewed rizzo cases plaintiffs sought massive structural relief local law enforcement systems therefore holdings cases inapposite cases plaintiff according appeals seeks enjoin established sanctioned police practice assertedly violative constitutional rights rizzo however easily confined facts lyons made showing realistically threatened repetition experience october met requirements seeking injunction federal whether injunction contemplates intrusive structural relief cessation discrete practice appeals also asserted lyons live active claim city period seconds stranglehold applied two reasons claim become moot disentitle lyons injunctive relief first normal rules equity case become moot merely complained conduct ceased second lyons claim capable repetition evading review therefore heard agree lyons live controversy city indeed still claim damages city appears meet art iii requirements nevertheless issue whether claim become moot whether lyons meets preconditions asserting injunctive claim federal forum equitable doctrine cessation challenged conduct bar injunction little help respect lyons lack standing rest termination police practice speculative nature claim experience injury result practice even continued rule claim become moot capable repetition yet evades review likewise inapposite lyons claim illegally strangled remains litigated suit damages sense claim evade review furthermore doctrine applies exceptional situations generally named plaintiff make reasonable showing subjected alleged illegality defunis odegaard indicated lyons made demonstration record findings made remand improve lyons position respect standing district reversed expressly address lyons standing seek injunctive relief although city careful preserve position question finding lyons faced real immediate threat illegally choked city policy described authorizing use strangleholds circumstances one threatened death grievous bodily harm policy described record contained department existing policy respect employment chokeholds nothing policy contained police department manual suggests chokeholds kinds force matter authorized absent resistance provocation arrestee suspect contrary police officers instructed use chokeholds lesser degrees force suffice gain control suspect violently resisting officer trying escape app conclusion appeals failed heed rizzo relevant authority district quite right dismissing count lyons fares better assumed pending damages suit affords art iii standing seek injunction remedy claim arising october events equitable remedy unavailable absent showing irreparable injury requirement met showing real immediate threat plaintiff wronged likelihood substantial immediate irreparable injury littleton speculative nature lyons claim future injury requires finding prerequisite equitable relief fulfilled injury lyons allegedly suffered go unrecompensed injury adequate remedy law contrary view appeals difficult holding see anyone ever challenge police similar administrative practices legality violence lyons claims subjected issue suit damages determined absent sufficient likelihood wronged similar way lyons entitled injunction citizen los angeles federal may entertain claim citizens assert certain practices law enforcement officers unconstitutional cf warth seldin schlesinger reservists stop war richardson suggest undifferentiated claims taken seriously local authorities indeed interest alert interested citizen essential element effective fair government whether local state national level federal however proper forum press claims unless requirements entry prerequisites injunctive relief satisfied decline invitation slight preconditions equitable relief held recognition need proper balance state federal authority counsels restraint issuance injunctions state officers engaged administration criminal laws absence irreparable injury great immediate supra younger harris mitchum foster held suits brought exempt flat ban issuance injunctions directed proceedings holding displace normal principles equity comity federalism inform judgment federal courts asked oversee state law enforcement authorities exercising equitable powers federal courts must recognize special delicacy adjustment preserved federal equitable power state administration law stefanelli minard littleton supra see also rizzo goode cleary bolger wilson schnettler pugach dollinger appeals failed apply factors properly therefore erred finding district abused discretion entering injunction case noted withholding injunctive relief mean federal law exercise deterrent effect circumstances lyons suffered injury barred federal constitution remedy damages furthermore deliberately deprive citizen constitutional rights risk conviction federal criminal laws ibid beyond considerations state courts need impose standing remedial requirements govern proceedings individual may permit courts use injunctions oversee conduct law enforcement authorities continuing basis role federal absent far justification lyons proffered case judgment appeals accordingly reversed footnotes order also gave judgment city count ii insofar count rested first eight amendments well count vii sought declaratory judgment city attorney authorized prosecute misdemeanor charges appears record file counts iii iv previously dismissed motion although reappeared amended complaint filed remand appeals terms injunction continue force approved training program presented fair assume approval given program confine use strangleholds situations use view district constitutional successive stays entered appeals injunction gone effect board police commissioners directed los angeles police department lapd staff use assess effectiveness alternative control techniques report findings board every two months prior oral argument case two reports submitted board took action november board extended moratorium opportunity review evaluate third report police department insofar advised third report yet submitted zwickler conviction reversed grounds city brief remand appeals first judgment parties agreed advised district respondent damages claim served effort obtain equitable relief brief petitioner respondent suggest otherwise case therefore came us fours judged centerpiece justice marshall dissent lyons standing challenge city policy recover damages prove allegedly occurred october pursuant city authorization agree completely lyons succeed damages action necessary prove happened alleged choked without provocation legal excuse whatsoever pursuant city policy several reasons however follow lyons standing seek injunction prayed count first lyons alleges count ii first amended complaint october officers carrying official policies city allegation incorporated reference count policy however described paragraphs count authorizing use chokeholds situations officers threatened far less deadly force equivalent unbelievable assertion city either orders authorizes application chokeholds resistance provocation second even allegation thought contained complaint belied record made application preliminary injunction third even complaint must read containing allegation officers authorized apply chokeholds resistance provocation follow lyons standing seek injunction application restraint holds situations experienced example suspect resists arrest tries escape threaten use deadly force yet precisely scope injunction lyons prayed count fourth event case controversy city sustain count lyons credibly allege faced realistic threat future application city policy justice marshall nowhere confronts requirement necessity lyons demonstrate stopped police also choked without provocation legal excuse justice marshall plainly agree requirement dissent littleton issue respect previously indicated supra lyons alleged feared choked future encounter police reasonableness lyons fear dependent upon likelihood recurrence allegedly unlawful conduct reality threat repeated injury relevant standing inquiry plaintiff subjective apprehensions emotional consequences prior act simply sufficient basis injunction absent real immediate threat future injury defendant course emotional upset relevant consideration damages action dissent notes lapd training officer stated police authorized employ control holds whenever officer feels bodily attack post dissent emphasis word feels apparently intended suggest lapd officers authorized apply holds whenever feel like distinction permitting use holds threat serious bodily harm officer feels believes bodily attack dissent failed make clear dissent point written oral pronouncement lapd evidence showing pattern police behavior indicate official policy permit application control holds suspect offering threatening offer physical resistance city memorandum suggesting question mootness informed use control holds become major civic controversy april may spirited vigorous times emotional debate issue took place result current moratorium use holds justice marshall justice brennan justice blackmun justice stevens join dissenting district found city los angeles authorizes police officers apply chokeholds citizens pose threat violence respondent adolph lyons subjected chokehold today holds federal without power enjoin enforcement city policy matter flagrantly unconstitutional may since one show choked future one even person like lyons almost choked death standing challenge continuation policy city free continue policy indefinitely long willing pay damages injuries deaths result dissent unprecedented unwarranted approach standing plainly case controversy concerning constitutionality city chokehold policy constitutionality policy directly implicated lyons claim damages city complaint clearly alleges officer choked lyons carrying official policy municipality liable conduct employees acted pursuant policy monell new york city dept social services lyons therefore standing challenge city chokehold policy obtain whatever relief may ultimately deem appropriate none prior decisions suggests requests particular forms relief raise additional issues concerning standing standing always depended whether plaintiff personal stake outcome controversy baker carr precise nature relief sought jenkins mckeithen opinion marshall joined warren brennan respondent adolph lyons negro male resides los angeles according uncontradicted evidence record october lyons pulled curb two officers los angeles police department lapd traffic infraction one taillights burned officers greeted drawn revolvers exited car lyons told face car spread legs ordered clasp hands put top head complied one officers completed patdown search lyons dropped hands ordered place back head one officers grabbed lyons hands slammed onto head lyons complained pain caused ring keys holding hand within seconds officer began choke lyons applying forearm throat lyons struggled air officer handcuffed continued apply chokehold blacked lyons regained consciousness lying face ground choking gasping air spitting blood dirt urinated defecated issued traffic citation released february lyons commenced action individual officers city alleging violations rights fourth eighth fourteenth amendments constitution seeking damages declaratory injunctive relief claimed subjected chokehold without justification defendant officers carrying official policies customs practices los angeles police department city los angeles count ii allegations included incorporated counts city named defendant see counts ii vi lyons alleged city authorizes use chokeholds innumerable situations police threatened use deadly force whatsoever count although city instructs officers use chokehold constitute deadly force since less persons died following use chokehold lapd police officer twelve negro males evidence submitted district established many years official policy city permit police officers employ chokeholds variety situations face threat violence reported altercations lapd officers citizens chokeholds used frequently means physical restraint february july lapd officers applied chokeholds least occasions represented reported altercations undisputed chokeholds pose high unpredictable risk serious injury death chokeholds intended bring subject control causing pain rendering unconscious depending position officer arm force applied victim voluntary involuntary reaction state health officer may inadvertently crush victim larynx trachea hyoid result may death caused either cardiac arrest asphyxiation lapd officer described reaction person choked ing chicken exh reference apparently reactions chicken neck wrung victim experiences extreme pain face turns blue deprived oxygen goes spasmodic convulsions eyes roll back body wriggles feet kick arms move wildly although occasion determine precise contours city chokehold policy evidence submitted district provides indications lapd training officer terry speer testified officer authorized deploy chokehold whenever feels bodily attack made app emphasis added training bulletin ontrol holds allow officers subdue resistance suspects exh emphasis added proceedings city characterized policy authorizing use chokeholds gain control suspect violently resisting officer trying escape subdue resistance suspects permit officer resisted necessarily threatened serious bodily harm death subdue suspect forcibly resists officer emphasis added training given lapd officers provides additional revealing evidence city chokehold policy officer speer testified instructing officers concerning use force lapd distinguish felony misdemeanor suspects app moreover officers taught maintain chokehold suspect goes limp app pet cert despite substantial evidence application chokehold invariably induces flight flee syndrome producing involuntary struggle victim easily misinterpreted officer willful resistance must overcome prolonging chokehold increasing force applied see supra addition officers instructed chokeholds safely deployed three four minutes app app pet cert robert jarvis city expert taught los angeles police academy past years admitted officers never told control cause death applied two seconds app nine deaths evidence submitted district average duration choke specified approximately seconds determining appropriateness preliminary injunction district recognized city policy subject constraints imposed due process clause fourteenth amendment found uring course confrontation said officers without provocation legal justification applied chokehold resulted injuries plaintiff emphasis added found city los angeles department authorize use holds circumstances one threatened death grievous bodily harm concluded use chokeholds constitutes deadly force city may constitutionally authorize use force situations death serious bodily harm threatened basis conclusion district entered preliminary injunction enjoining use bar arm holds circumstances threaten death serious bodily injury appeals noted trial judge done far tell city police officers may apply life threatening strangleholds persons stopped routine police work unless application force necessary prevent serious bodily harm officer ii outset important emphasize lyons entitlement injunctive relief entitlement award damages depend upon whether show city chokehold policy violates constitution indispensable prerequisite municipal liability proof conduct complained attributable unconstitutional official policy custom polk county dodson monell new york city dept social services enough plaintiff show employees agents municipality violated violate constitution municipality held liable solely theory respondeat superior see monell supra errs suggesting lyons prayer injunctive relief count first amended complaint concerns policy responsible injuries therefore support award damages ante paragraph complaint alleges lyons choked without provocation legal justification excuse paragraph expressly alleges defendant officers carrying official policies customs practices los angeles police department city los angeles virtue thereof defendant city liable actions officers emphasis added allegations incorporated counts city including count basis assertion lyons failed allege city either orders authorizes application chokeholds resistance provocation ante completely loss understand paragraphs deemed insufficient allege city policy authorizes use chokeholds without provocation apparently finds lyons complaint wanting although alleges choked without provocation officers acted pursuant official policy fails allege haec verba city policy authorizes choking suspects without provocation aware case decided since abolition old forms action cites none way supports crabbed construction complaint federal capable concluding two plus two equals four also errs asserting even complaint sufficiently alleges city policy authorizes use chokeholds without provocation allegation event belied record made application preliminary injunction ibid conclusion flatly contradicts district express factual finding left undisturbed appeals officers applied chokehold resulted injuries plaintiff emphasis added city contend factual finding clearly erroneous sum absolutely clear lyons requests damages injunctive relief call question constitutionality city policy concerning use chokeholds show policy unconstitutional entitled damages injunction iii since lyons claim damages plainly gives standing since success claim depends upon demonstration city chokehold policy unconstitutional beyond dispute lyons properly invoked district authority adjudicate constitutionality city chokehold policy dispute concerning constitutionality policy plainly presents case controversy art iii nevertheless holds federal power art iii adjudicate lyons request lawsuit injunctive relief respect policy anomalous result supported either precedent fundamental concern underlying standing requirement moreover fragmenting single claim multiple claims particular types relief requiring separate showing standing form relief decision today departs traditional conception standing remedial powers federal courts simply disingenuous assert decision requires extension littleton rizzo goode ante contrast case rizzo involved disputes focusing solely threat future injury plaintiffs cases alleged faced plaintiffs allege past injury seek compensatory relief rizzo plaintiffs sought declaratory injunctive relief alleged past instances police misconduct attempt establish substantiality threat future injury similarly claim damages based past injuries ashcroft mattis golden zwickler also relies decisions support holding today recognized standing art iii established allegation threatened actual injury quoting linda richard emphasis added see also plaintiffs rizzo mattis zwickler seek redress past injury standing sue depended entirely risk future injury faced apart desire eliminate possibility future injury plaintiffs cases personal stake outcome controversies contrast lyons request prospective relief coupled claim damages based past injury addition risk subjected chokehold future lyons suffered past injury live claim damages need rely solely threat future injury establish personal stake outcome controversy cases relied majority simply occasion decide whether plaintiff standing litigate dispute must clear separate standing hurdle respect form relief sought decision likewise finds support fundamental policy underlying art iii standing requirement concern federal decide legal issue plaintiff lacks sufficient personal stake outcome controversy assure concrete adverseness sharpens presentation issues upon largely depends illumination difficult questions baker carr stated flast cohen question standing related whether dispute sought adjudicated presented adversary context form historically viewed capable judicial resolution see also valley forge christian college americans separation church state standing requirement ensures legal questions presented resolved rarified atmosphere debating society concrete factual context conducive realistic appreciation consequences judicial action lyons claim damages city prevail claim unless demonstrates city chokehold policy violates constitution personal stake outcome controversy adequately assures adversary presentation challenge constitutionality policy moreover resolution challenge largely dispositive requests declaratory injunctive relief doubt requests injunctive relief may raise additional questions questions involve familiar issues relating appropriateness particular forms relief never thought implicate litigant standing sue denial standing separately seek injunctive relief therefore justified basic concern underlying art iii standing requirement fragmenting standing inquiry imposing separate standing hurdle respect form relief sought decision today departs significantly traditional conception standing requirement remedial powers federal courts never required plaintiff standing litigate claim whether entitled obtain particular forms relief prevail never understood issue standing determining whether plaintiff standing always focused personal stake outcome controversy issues sought litigated flast cohen supra precise nature relief sought jenkins mckeithen opinion marshall joined warren brennan cases uniformly state touchstone art iii standing requirement plaintiff personal stake underlying dispute particular types relief sought plaintiff establishes personal stake dispute done necessary invok authority challenge action sought adjudicated valley forge christian college americans separation church state supra see flast cohen stake dispute adjudicated lawsuit eisenstadt baird plaintiff must sufficient interest challenging statute validity personal stake litigant depends turn whether alleged legally redressable injury determining whether plaintiff sufficient personal stake outcome controversy asked whether personally suffered actual threatened injury gladstone realtors village bellwood emphasis added whether injury fairly traced challenged action simon eastern kentucky welfare rights whether plaintiff injury likely redressed favorable decision see also duke power carolina environmental study group warth seldin criteria determining whether plaintiff established requisite personal stake fragment standing inquiry series discrete questions plaintiff stake particular types relief sought quite contrary ask simply whether plaintiff sufficient stake seeking judicial resolution controversy lyons alleged past injury risk future injury linked city chokehold policy established principles additional question determining standing art iii whether injuries alleged remedied prevented form judicial relief satisfaction requirement ensures lawsuit entail issuance advisory opinion without possibility judicial relief exercise remedial powers actually redress alleged injury therefore lyons needs demonstrate prevail merits exercise remedial powers redress claimed injuries duke power supra see also warth seldin supra simon supra lyons easily made showing monetary relief plainly provide redress past injury prospective relief reduce likelihood future injury nothing ever required establish standing decision turns principles heads requiring separate standing inquiry respect request relief questions concerning remedy relevant threshold issue standing limited sense relief must possible approach adopted today drastically alters inquiry remedy must made determine standing fragmentation standing inquiry also inconsistent way federal courts treated remedial issues since merger law equity federal practice reserve consideration appropriate relief determination merits foreclose certain forms relief ruling pleadings prayer relief part plaintiff cause action see moore lucas moore federal practice moore cases cited therein wright miller kane federal practice procedure wright miller kane rather usual rule legal rights invaded federal statute provides general right sue invasion federal courts may use available remedy make good wrong done bell hood omitted rule federal rules civil procedure specifically provides every final judgment shall grant relief party whose favor rendered entitled even party demanded relief pleadings question whether plaintiff stated claim turns whether asked proper remedy whether entitled remedy emphasis added wright miller kane fully consistent approach taken standing cases supra page provides justification departing traditional treatment remedial issues demanding separate threshold inquiry form relief plaintiff seeks anomalous require plaintiff demonstrate standing seek particular form relief requested complaint rule remedy party may entitled need even demanded complaint see holt civic club tuscaloosa albemarle paper moody traditional federal practice sound one even appears highly unlikely outset lawsuit plaintiff establish entitled particular remedy dangers inherent doctrine permits foreclose consideration remedy ruling pleadings plaintiff lacks standing seek broad discretion grant appropriate equitable relief protect party injured unlawful conduct well members class future injury may occur wrongdoer permitted continue unlawful actions plaintiff alleges past injury risk future injury presents concededly substantial claim defendant implementing unlawful policy rarely easy decide certainty outset lawsuit equitable relief appropriate conceivable set facts might establish support claim sum approach standing wholly inconsistent standing principles clashes longstanding conception remedial powers necessary invoke authority resolve particular dispute iv apart question standing remaining question presented petition certiorari whether preliminary injunction issued district must set aside constitute substantial interference operation municipal police department pet cert view portion brief concerning second question city argues district ignored principles federalism set forth rizzo goode brief petitioner city reliance rizzo misplaced case involved injunction significantly revis ed internal procedures philadelphia police department injunction required police department adopt comprehensive program dealing adequately civilian complaints formulated accordance extensive guidelines established district quoting council organizations phila police rizzo supp guidelines specified detailed revisions police manuals rules procedure well adoption specific procedures processing screening investigating adjudicating citizen complaints addition district supervised implementation comprehensive program issuing detailed orders concerning posting distribution revised police procedures drawing citizen complaint report format designated district also reserved jurisdiction review progress police department concluded sweeping nature injunctive relief inconsistent principles federalism principles federalism simply preclude limited preliminary injunction issued case unlike permanent injunction issue rizzo preliminary injunction involved entails federal supervision lapd activities preliminary injunction merely forbids use chokeholds absent threat deadly force permitting continued use threat exist limited ban takes form preventive injunction traditionally regarded least intrusive form equitable relief moreover city remove ban obtaining approval training plan although preliminary injunction also requires city provide records uses chokeholds respondent allow access records requirement hardly onerous since lapd already maintains records concerning use chokeholds district mindful intervention daily operation large city police department undesirable avoided possible rizzo supra blackmun dissenting modest interlocutory relief granted case differs markedly however intrusive injunction involved rizzo simply implicate federalism concerns arise federal undertakes supervise functioning police department apparently unwilling rely solely unprecedented rule standing goes conclude even lyons standing equitable remedy unavailable ante reliance alternative ground puzzling two reasons says lyons lacks standing art iii federal courts power decide entitlement equitable relief merits view art iii discussion part purely advisory opinion addition question whether injunctive relief available equitable principles simply us granted certiorari determine whether lyons standing whether preliminary injunction must set aside constitutes impermissible interference operation municipal police department grant certiorari consider whether lyons satisfies traditional prerequisites equitable relief see supra even issue properly raised agree disposition single exception rizzo goode supra cases relied concerned injunctions state criminal proceedings rule younger harris injunctions issued extraordinary circumstances threat injury great immediate reflects venerable rule equity enjoin criminal prosecution fact constitutional defenses raised state prosecution appreciation friction injunctions state judicial proceedings may produce see ibid steffel thompson prior decisions repeatedly emphasized injunction directed state criminal proceeding relevant principles equity comity federalism underlie younger doctrine little force steffel thompson supra citing lake carriers assn macmullan outside special context younger doctrine applies held appropriateness injunctive relief governed traditional equitable considerations see doran salem inn whatever precise scope younger doctrine may concerns comity federalism counsel restraint federal asked enjoin state criminal proceeding simply apply injunction directed solely police department preliminary injunction granted district analyzed general equitable principles rather stringent standards younger harris becomes apparent rule law precludes equitable relief requires preliminary injunction set aside reviewing interlocutory relief may consider whether issuance injunction constituted abuse discretion brown chote district concluded basis facts lyons choked without provocation pursuant unconstitutional city policy supra given necessarily preliminary nature inquiry way district know precise contours city policy ascertain risk lyons alleged policy applied discriminatory manner might subjected chokehold view conclusion unprovoked choking lyons pursuant city policy lyons satisfied usual basis injunctive relief exists cognizable danger recurrent violation rondeau mosinee paper quoting grant risk serious injuries deaths citizens also supported decision grant preliminary injunction courts equity much greater latitude granting injunctive relief furtherance public interest private interests involved virginian railway employees see wright miller kane moore case know district amply justified considering risk public preliminary injunction stayed five additional deaths occurred prior adoption moratorium see supra circumstances believe district abused discretion indeed approved decision directed issuance permanent injunction similar situation see lankford gelston cited approval allee medrano see supra lankford citizens whose houses searched solely basis uncorroborated anonymous tips sought injunctive relief fourth circuit sitting en banc held plaintiffs entitled injunction enforcement police department policy authorizing searches even though evidence homes searched future lyons less entitled seek injunctive relief hold otherwise vitiate one valuable features equity jurisdiction anticipate prevent threatened injury damages insufficient irreparable vicksburg waterworks vicksburg unnecessary consider propriety permanent injunction district simply sought protect lyons citizens los angeles pending disposition merits time enough consider propriety permanent injunction district grants relief vi decision removes entire class constitutional violations equitable powers federal immunizes prospective equitable relief policy authorizes persistent deprivations constitutional rights long individual establish substantial certainty injured injured future chief justice asked bivens six unknown fed narcotics agents dissenting opinion judicial response police order authorizing shoot kill respect every fugitive answer easy predict collective wrath outrage ibid learn wrath outrage translated order cease unconstitutional practice award damages victimized practice live sue survivors fortunate view expressed majority today police adopt policy shoot kill policy shooting suspects federal courts powerless enjoin continuation cf linda richard white dissenting federal judicial power limited levying toll systematic constitutional violation following summary evidence taken lyons deposition notice application application preliminary injunction declaratory relief points authorities pp although petitioner answer contains general denial allegations set forth complaint petitioner never presented evidence challenge lyons account brief petitioner count first amended complaint also stated claim individual officers damages thus city negro males constitute population accounted deaths resulting use chokeholds addition allegations lyons alleged racial discrimination violation equal protection clause fourteenth amendment deaths occurred prior district issuance preliminary injunction although time parties aware december appeals stayed preliminary injunction pending appeal four additional deaths occurred period prior grant stay pending filing disposition petition certiorari rehnquist chambers two deaths occurred thereafter lyons motion preliminary injunction heard affidavits depositions government records statement officer pascal dionne physical training unit lapd app statement officer pascal dionne figures undoubtedly understate frequency use chokeholds since officer dionne witness city testified figures compiled include altercations police officers citizens officer dionne statement define altercation indicate altercation reports must filed officer city maintain record injuries suspects physiological effects chokeholds described follows griswold expert pathology medical point view bar arm control extremely dangerous unpredictable fashion pressure locked forearm across neck sufficient compress close trachea applied sufficient period time cause unconsciousness asphyxia must anatomical certainty also result high risk fractured hyoid bone crushed larynx risk substantial time unpredictable depends one thing vertical portion neck forearm pressure exerted another factor contributing unpredictability reaction victim pressure exerted bar arm control result laryngeal spasm seizure simply shuts trachial air passage leading death asphyxiation also must result transmission brain nerve messages immediate acute danger death transmission immediately sets flight flee syndrome wherein body reacts violently save escape adrenalin output increases enormously blood oxygen switched muscles strong violent struggle ensues great extent involuntary medical point view way distinguish involuntary death struggle wilful voluntary resistance thus instruction cease applying hold resistance ceases meaningless violent struggle increases risk permanent injury death victim reserve may already state reduction reason cardiac respiratory disease lapd operates misconception length time applying hold sole measure risk simply true sufficient force applied larynx crushed hyoid fractured death ensuing seconds irreversible laryngeal spasm also occur seconds medical point view carotid control extremely dangerous manner least equally unpredictable bar arm control applied sufficient pressure control crush carotid sheath bony structure neck foreseeably shutting supply oxygenated blood brain leading unconsciousness approximately seconds however pressure carotid sheaths also results pressure inadvertent unintended vagus nerves vagus nerves right left arise brain composed sensory motor fibers stimulation nerves pressure activate reflexes within vagus system result immediate heart stoppage cardiac arrest also evidence cardiac arrest result simultaneous pressure vagus nerves regardless intensity duration pressure city opposition application preliminary injunction cd cal pp brief opposition motion stay cd cal preliminary injunction provided city lift injunction obtaining approval training program also required city keep records uses chokeholds make records available district refrained determining precise nature city policy given limited nature inquiry preliminary injunction stage brown chote contrary suggestion ante clearly inconsistency allegation paragraph complaint lyons choked without provocation legal justification excuse allegations city authorizes chokeholds situations officers threatened far less deadly force even issue properly us agree substitute judgment district one city training officers testified officer authorized use chokehold whenever feels bodily attack made app testimony indicates officer authorized use chokehold whenever subjectively perceives threat regardless whether suspect done anything provide objective basis perception district finding refuted statement city policy set forth lapd manual ante municipal liability may predicated proof official custom whether custom embodied formal policy monell new york city dept social services although counsel plaintiffs suggested oral argument certain plaintiffs exposed illegal conduct past fact damages sought petitioners specific instances involving individually named respondents set forth claim judicial officers referred absence past injury repeatedly see plaintiff mattis originally seek damages district found defendant officers shielded goodfaith immunity pursued prospective relief although held case mooted elimination damages claim way suggested plaintiff requests declaratory injunctive relief entertained damages claim remained viable held plaintiff primary claim present interest controversy obtain emotional satisfaction ruling son death wrongful omitted personal stake outcome required art iii zwickler plaintiff even allege might run office merely asserted candidate congress held mere logical possibility insufficient present actual controversy lankford gelston en banc cited approval allee medrano fourth circuit found standing facts indistinguishable case lankford appeals held four negro families subjected illegal house search entitled seek injunctive relief baltimore police department policy conducting wholesale searches based uncorroborated anonymous tips even though plaintiffs claim likely negro residents city subjected illegal search future suggested absence damages claim highly pertinent conclusion plaintiff standing noted plaintiffs claim relief state attorney specific instances misconduct respect particular individuals alleged emphasis added stood sharp contrast claim relief magistrate judge contain similar allegations plaintiffs seek damages state attorney see spomer littleton like claims state attorney lyons claims city allege past injury risk future injury whereas acknowledged significance standing purposes past injury today inexplicably treats lyons past injury seeking redress wholly irrelevant standing inquiry us reliance rizzo misplaced another reason rizzo concluded evidence presented trial failed establish affirmative link occurrence various incidents police misconduct adoption plan policy defendants misconduct challenged view result behavior unidentified officials named defendants rather policy named defendants city managing director police commissioner serious doubts whether case controversy existed plaintiffs defendants contrast lyons clearly established case controversy city concerning constitutionality city policy see supra rizzo specifically distinguished cases case controversy found exist existence official policy responsible past threatened constitutional deprivations distinguishing hague cio allee medrano lankford gelston supra irrelevant district severed lyons claim damages claim injunctive relief ante district deciding whether issue injunction upholds city policy constitutional attack ruling res judicata respect lyons claim damages severance claims therefore diminish lyons incentive establish unconstitutionality policy unnecessary decide whether standing plaintiff alleges past injury legally redressable depends whether specifically seek damages see lankford gelston supra plaintiffs seek damages permitted seek injunctive relief based past injury see supra errs asserting lyons standing seek injunctive relief injunction prayed count reaches suspects unlike lyons offer resistance attempt escape ante even separate inquiry lyons standing seek injunctive relief opposed damages appropriate even standing seek entire injunction requests follow standing seek injunctive relief even view lyons presumably standing seek enjoin use chokeholds without provocation therefore justification reversing judgment entirety reliance precise terms injunction sought count also misplaced fundamental reason whatever may said novel rule separate showing standing must made form relief requested simply wrong assuming scope injunction prayed raises question standing litigant entitled advance substantive legal theory entitle relief lyons entitlement relief may ultimately rest principle municipality may authorize use chokeholds absent threat deadly force principle district tentatively embraced issuing preliminary injunction support entire injunction sought count alternatively lyons entitlement relief may rest narrower theory lyons prevails appropriateness injunction prayed count depend legal principle upon district predicates decision may well judicious district exercise discretion rest decision theory support full scope injunction lyons requests nothing whatsoever lyons standing limited inquiry remedy addresses two jurisdictional concerns provides support requirement standing separately demonstrated respect particular form relief sought first must power fashion appropriate remedy concern aspect general requirement reflects view adjudication rights powerless enforce tantamount advisory opinion see aetna life ins haworth controversy must real substantial one admitting specific relief decree conclusive character distinguished opinion advising law upon hypothetical state facts emphasis added second must determine available remedy substantial probability warth seldin redressing plaintiff injury latter concern merely recasting causal nexus supra must exist alleged injury action challenged ensures granting judicial relief exercise futility see duke power carolina environmental study group considerations summarized requirement plaintiff need allege injury legally redressable jenkins mckeithen emphasis added clear opinion whether district wholly precluded granting form declaratory injunctive relief even ultimately holds lyons prevail claim damages city ground city chokehold policy unconstitutional responsible injury question petition raised question lyons standing question petition federal order constitute substantial interference operation municipal police department modifies policies concerning use force takes control department training reporting systems relative particular force technique course municipalities may enjoined monell new york city dept social services approved issuance injunctions federal courts state municipal police departments necessary prevent continued enforcement unconstitutional official policies see allee medrano hague cio lankford gelston en banc cited approval allee supra although federalism concerns relevant fashioning appropriate relief stated repeatedly federal retains power order available remedy necessary afford full relief invasion legal rights see swann board education bell hood explained rizzo goode support decision barring lyons obtaining injunctive relief case involved injunction entailed judicial supervision workings municipal police department simply sort preventive injunction lyons seeks supra