Warner Bros. has released a large batch of new images from director Ruben Fleischer’s upcoming period drama Gangster Squad.  The movie is set in 1940s Los Angeles and stars Sean Penn as real-life gangster Mickey Cohen, who became the target of special task force known as the “Gangster Squad”.  If you missed it, be sure to check out all of our set visit coverage including 15 things to know and our interviews with Fleischer, Josh Brolin, Anthony Mackie, Robert Patrick, Giovanni Ribisi, and producers Dan Lin and Kevin McCormick.Hit the jump to check out the images.  The film also stars Ryan Gosling, Michael Pena, Nick Nolte, and Emma Stone.  Gangster Squad opens on January 11th.Here’s the official synopsis for Gangster Squad:

Los Angeles, 1949. Ruthless, Brooklyn-born mob king Mickey Cohen (Sean Penn) runs the show in this town, reaping the ill-gotten gains from the drugs, the guns, the prostitutes and–if he has his way–every wire bet placed west of Chicago. And he does it all with the protection of not only his own paid goons, but also the police and the politicians who are under his control. It’s enough to intimidate even the bravest, street-hardened cop…except, perhaps, for the small, secret crew of LAPD outsiders led by Sgt. John O’Mara (Josh Brolin) and Jerry Wooters (Ryan Gosling), who come together to try to tear Cohen’s world apart. “The Gangster Squad” is a colorful retelling of events surrounding the LAPD’s efforts to take back their nascent city from one of the most dangerous mafia bosses of all time.