James Cagney made a big splash in William A. Wellman’s The Public Enemy (1931). It was his first starring role. Some people claim that when Cagney first walked on screen in that picture, it was the beginning of “modern acting.” Whether or not you believe that claim, there’s no denying the impact Cagney had on Hollywood, especially gangster films. The scene in which he shoves a grapefruit half into Mae Clarke’s face is iconic. Late in his life, Cagney claimed that people still sent grapefruits to his table in restaurants, with a wink and a nod. The Public Enemy ushered in a new era of onscreen violence, and an icon was born.