Well before Hoover's FBI even acknowledged that the Mafia existed, the L.A.P.D. launched a squad of eight men who slept with Tommy guns under their beds while combating "an invasion of undesirables." The true story of the secretive police unit that waged an anything-goes war to drive Mickey Cohen and other hoodlums from L.A. after WWII. The new film stars Sean Penn and Ryan Gosling.