Gangster Squad has debuted a new featurette.The video sees director Ruben Fleischer and stars including Ryan Gosling and Anthony Mackie discussing their hope to make the movie this generation's iconic gangster film.The film centres around 1940s real-life gangster Mickey Cohen (Sean Penn), who was targeted by a special LAPD task force.Emma Stone, Nick Nolte, Josh Brolin, Giovanni Ribisi and Micha