[[quoteright:214:http://static.tvtropes.org/pmwiki/pub/images/MV5BMTcwMjAyMTUzMl5BMl5BanBnXkFtZTcwODgxNzk1OA__V1__SY317_CR00214317__2446.jpg]]
[[caption-width-right:214:Straight gangster.]]

''Gangster Squad'' is a 2013 crime thriller directed by [[{{Film/Zombieland}} Ruben Fleischer]], which follows a group of detectives in the LAPD who fight against the West Coast Mafia, led by notorious gangster Mickey Cohen, in 1949.

Mickey Cohen (Creator/SeanPenn) is a former boxer-turned-gangster who maintains an iron grip on Los Angeles, and runs a series of prostitution and drug rackets that have the city locked in a sea of corruption. After busting one of Cohen's men when he attempts to rape a young woman, Sgt. John O'Mara (Josh Brolin) is approached by the LAPD's Chief of Police, Bill Parker (Nick Nolte), to create a special squad that will take down Cohen's empire by any means necessary. To that end, O'Mara recruits a group of five men to help him, including Detective Coleman Harris (Creator/AnthonyMackie), gunhand Max Kennard (Robert Patrick), wiretapping expert Conway Keeler (Giovanni Ribisi), new recruit Navidad Ramírez (Michael Pena) and Sgt. Jerry Wooters (Creator/RyanGosling).

As the team begins to take out more and more of Cohen's establishments, the gangster steps up his search for them and declares an all-out war on the squad. Complicating matters is Wooters' burgeoning relationship with Grace Faraday (Creator/EmmaStone), who is Cohen's girlfriend. The conflict eventually leads into a final confrontation, with the very soul of Los Angeles at stake.

The film is a GenreThrowback to the FilmNoir movies of the 1940's and 50's, and was released in January 2013 to mixed reviews. A key sequence involving a group of mobsters shooting through a screen in a movie theater was reshot due to the film's proximity to the 2012 Aurora, Colorado movie theater shooting.

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!!This film provides examples of:

* AllStarCast: Most of the main cast, including Brolin, Gosling, Stone, Penn, Ribisi, Mackie, Nolte, Patrick and Peńa.
* AnAsskickingChristmas: Most of the film takes place around Christmas. Notably, O'Mara's Christmas tree is still standing after [[spoiler:Cohen has his residence shot up]], and the climax takes place in a hotel lobby with a large tree and plenty of presents.
* AntiHero: Most characters seem to show no mercy towards their enemies, even bullying them or torturing them instead of just killing them, and save for Wheeler, they show no remorse for the things they do to the mooks in their way. O'Mara's wife encourages him to invoke this when recruiting his squad, stating that the "Boyscouts" he's been looking at are probably dirty.
* AssholeVictim: The gangster who gets corrosive acid poured on his balls by Wooters can't really be felt sorry for, as he was planning to throw the acid in Grace's face.
* BlackGuyDiesFirst: [[spoiler: Averted. Harris is shot, but survives]].
* BloodKnight: Mickey Cohen.
* ChekhovsSkill:
** Cohen's boxing skills are alluded to several times in the film. The final shootout ends with O'Mara and Cohen having an impromptu boxing match after the latter's car crashes.
** During the squad's first training scene, Kennard tells Navidad (while demonstrating skeet shooting with a tin can) that he should not focus on where the target is, but where it will be. Navidad later uses this skill to shoot and kill Cohen's last surviving lieutenant, who is about to execute O'Mara during the climax.
* CowboyCop: The movie is about a whole squad of them. Bonus points for Kennard, who literally looks and talks like a cowboy.
* ChewingTheScenery: Penn's performance as Cohen.
* ChivalrousPervert: Jerry Wooters.
* ChronicHeroSyndrome: John O'Mara, who gets chewed out by his commanding officer after he saves a young woman from being raped by Cohen's men at a brothel.
* CreativeClosingCredits: The main credits are overlaid on vintage 40's postcards.
* DaChief: Chief Bill Parker, who assigns O'Mara to create the squad that will operate anonymously to take down Cohen's empire.
* DeadpanSnarker: Coleman Harris and Wooters.
* DespairEventHorizon: Happens for Wooters when [[spoiler:the shoeshine boy is hit by a Tommy gun bullet while some of Cohen's gang members are trying to whack Dragna]].
* EarnYourHappyEnding
* EpicFail: The squad's first operation (in Burbank) gets inexplicably worse by the minute. The team tries to take down one of Cohen's casinos at gunpoint, only to run smackdab into a group of armed officers who arrest Davis and O'Mara after they fail to get into the squad's car while giving it a running boost. The two men get arrested and thrown in jail (after being briefly beaten), and are set to be picked up and whacked by Cohen's men. The team arrives to save them, but Kennard's plan of tying a rope from his vehicle to the prison window bars fails (the bumper gets ripped off the car), Keeler's plan to cut the power results in chaos in the prison block, and the whole thing would have gone south if Wooters hadn't show up.
* FemmeFatale: Grace.
* FieryCoverup: Cohen has a hotel masquerading as a front for a brothel burned to the ground (along with the three men who failed him), because he doesn't want the police to find out ''and'' can collect the insurance money.
* FiringOneHanded: With a ''shotgun'', no less.
* FisticuffsBoss: O'Mara's final showdown with Cohen is a demonstration of Cohen's boxing skills.
* FiveManBand:
--> '''TheLeader''': O'Mara (Type I)
--> '''TheLancer''': Wooters
--> '''TheSmartGuy''': Keeler
--> '''TheBigGuy''': Kennard
--> '''TheHeart''': Harris
--> '''TheSixthRanger''': Ramírez
* AGodAmI: "You're talking to God, Mitch, so you might as well swear to me."
* GoodPeopleHaveGoodSex: A throwaway line from Connie early on implies that she's more than satisfied about John's performance between the sheets.
* {{Gorn}}: A man is pulled apart by two cars in the opening scene. Many more are riddled with bullets and burns onscreen throughout.
* GoryDiscretionShot: Used when a gangster fails and is punished via [[ThisIsADrill a power drill to the head]].
* TheGreatestStoryNeverTold: The Squad's actions were not recorded in history and the Chief of Police got all the credit, so only the Squad's friends and family know what they did.
* GrenadeHotPotato: During a chase scene with a group of mobsters transporting a drug shipment, one of the mobsters lights a grenade and tosses it onto the hood of the vehicle Wooters and O'Mara are in. Wooters has enough time to shoot out the front window, pick the grenade and lob it backwards over the hood of the car before it explodes behind them.
* GunsAkimbo: Wrevock does it with ''Tommyguns'' in Chinatown.
* TheGunslinger: Kennard, preferring his revolver to anything else.
* HairTriggerTemper: Mickey may react to bad news in a calm manner, but he'll immediately have you killed afterwards, regardless of how minute it is.
* TheHeavy: Mickey Cohen.
* HeroicSacrifice: [[spoiler:Jack Whalen]] confronts Cohen at the Garden of Allah Hotel in order to buy Grace some time to escape, and while he does put up a good fight against Cohen and his men, he is soon executed and thrown into the hotel pool.
* HeroesWantRedheads: Wooters and Grace.
* HistoricalBeautyUpdate: For [[http://upload.wikimedia.org/wikipedia/commons/6/6a/Mickey_Cohen.jpg Mickey Cohen]].
* HistoricalDomainCharacter: Aside from Cohen and O'Mara, Darryl Gates (the eventual chief of the L.A. Police Department), who appears as an officer.
* HollywoodHistory: The film plays ''very'' fast and loose with the real-life events that inspired the movie.
** The real John O'Mara was not a gunsmith at all, and was claimed to have only fired one shot in his entire career (a warning shot at a perpetrator). In the film, Brolin's O'Mara shoots men in the legs and kills several others with a Tommy gun.
** In the film, Cohen is arrested after a final confrontation with O'Mara outside of a hotel. In real life, Cohen was only arrested twice, for federal income tax evasion in the early 50's and in 1961.
** The man who inspired the character of Jack Whalen (Jack Dragna) was never killed by Cohen. He died of natural causes in 1956.
* ImprobableAimingSkills: Kennard, who shoots a tin can six times in the air while using a revolver.
* InfantImmortality: Played straight with [[spoiler:O'Mara's infant child]]. Subverted with [[spoiler:Pete the shoeshine kid]].
* InstantSeduction: Wooters' explanation that he's a bible salesman (and that he only wants to get her into bed) is enough for Grace to go home with him a few minutes after meeting him - and while she's with Cohen, no less.
* JackBauerInterrogationTechnique: Standard tactics for the Squad.
* JustInTime: Wooters arrives just in time to save O'Mara from being blown up by a explosive-rigged truck planted by Cohen's men in Chinatown.
* KnifeNut: Harris, especially when it comes to throwing them.
* LadyInRed: Grace first appears in a red evening dress.
* LoveableRogue: Jack Whalen.
* MaternityCrisis: Cohen's attack on the O'Mara home (while he isn't there) causes his wife to go into premature labor, and she manages to crawl into a washroom and give birth in a tub.
* MissingTrailerScene: After a similar real life incident left a couple individuals dead, a scene of a shootout in a movie theater was cut from the movie and replaced.
* OldMaster: Max Kennard.
* TheOner: The scene where Wooters first meets Whalen at the nightclub is one long continuous 80 second long tracking shot, following Wooters from when he meets with Pete outside, pays him off, and then follows him all the way to his seat.
* OutsideRide: When Mickey Cohen flees from the shootout at the climax of the film, O'Mara follows by jumping onto the back of the car and holding on. He is helped by the fact the rear window had been shot out earlier.
* PostClimaxConfrontation: The climax is the squad's assault on the hotel where Cohen is holed, but the final confrontation (between O'Mara and Cohen) doesn't occur until after Cohen's car crashes into a water fountain a couple blocks away.
* PreMortemOneLiner: After Pete gets shot, Wooters comes up shooting at the hitmen. The hitman with the shotgun falls while the two with the Thompson submachine guns get into the car and flee. Wooters steps up to the fallen hitman:
-->'''Hitman''': ''You can't shoot me, you're a cop.''
-->'''Wooters''': ''Not anymore.'' ''[blasts his head off with the hitman's shotgun]''
* PrettyInMink: Grace wears a fur-trimmed coat, a mink-trimmed stole, and a white fox wrap in various scenes.
* RealLifeWritesThePlot: In light of an actual incident, the trailers and ads were pulled from films and TV due to a scene where [[HarsherInHindsight a shoot out takes place in a movie theater]]. The cast and crew actually got together afterward to film another scene (the Chinatown sting operation) to replace the cinema scene. The result was the film being pushed back several months, but the filmmakers avoided some serious backlash.
* RefusalOfTheCall: Wooters seems content to let things stay the way they are because he knows he can't change anything. He doesn't get into the squad until [[spoiler:Pete the shoeshine boy]] is shot when Cohen's men attempt to assassinate a fellow mob figure, which provides the catalyst for him to finally help O'Mara.
* ReturningWarVet: O'Mara, Wooters and Keeler all served in WWII. Wooters was a Navy aviator, and as such, his experience doesn't come into play (although it's mentioned in dialogue to Grace). However, O'Mara was an OSS operative and thus experienced in guerrilla warfare, and Keeler was in Army Intelligence, meaning learning how to gather information.
* RevolversAreJustBetter: Kennard, and later, Ramírez.
* SharpDressedMan: All of the squad members, although it is shown that O'Mara doesn't know how to do his tie up well (seeing as it comes down to different lengths throughout the film).
* ShesGotLegs: Grace.
* TakeUpMySword: Kennard gives his revolver to Ramírez [[spoiler:just before he dies from a bullet wound inflicted by one of Cohen's men]].
* TroubleEntendre: After getting word of the hit on the drug shipment, Cohen tells his main assassin, "[[ThisIsADrill You know the drill]]", which both means "Kill the guy who brought me the bad news," and also means, "Use the power drill and drill a hole through his brain."
* UnflinchingWalk: Played with. The gang starts to walk away from a soon-exploding car, and when it goes up in flames they turn to look at it. Very casually.
* VaporTrail: When Cohen's goon attempt to ambush the squad in Chinatown, they open the fuel tank in the truck the squad are converging on. One of the gangsters then tosses his lit cigarette into the pooling fuel to light it up.
* VeryLooselyBasedOnATrueStory: Cohen was actually taken down for income tax evasion charges, not for murder.
* WhereAreTheyNowEpilogue
* YouHaveFailedMe: Mickey Cohen does not tolerate his men screwing up. He'll lock them up in an elevator and burn down the building, or have their head drilled through.
* YourCheatingHeart: Grace for Cohen.
* YouWouldMakeAGreatModel: In the opening, a young woman is approached by one of Cohen's men to audition for a film role soon after arriving in L.A. She is almost raped by three of Cohen's men after arriving at the apartment (which is on Cohen's turf), but is saved by O'Mara before anything happens. The three men are subsequently then offed by being locked up in an elevator in a building that is then burned down for the insurance money.
* YouWouldntShootMe: One of the gangsters who was shot down by Wooters.
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