"Gangster Squad" is a 2013 crime film directed by Ruben Fleischer. Set in the late 1940s, it follows a secret police unit in Los Angeles tasked with taking down the notorious mobster Mickey Cohen, played by Sean Penn. The film showcases the battle between law enforcement and organized crime during a time of rampant corruption. The squad, led by Josh Brolin's character, employs unconventional methods to combat Cohen's criminal empire. The film features a star-studded cast, including Ryan Gosling and Emma Stone, and highlights themes of loyalty, justice, and the moral complexities of fighting crime.