The early 1970s also brought a rebirth of gritty crime film, three years after the influential "Bullitt". William Friedkin's "The French Connection", starring Gene Hackman as a drug detective and Sidney Lumet's "Serpico", starring Al Pacino in the true-life story of an honest cop who fought corruption, were two of the most famous ones. Films like "Get Carter" featured gratuitous nudity, while Stanley Kubrick's groundbreaking "A Clockwork Orange" featured much physical and sexual violence to complement its complex story. African American filmmakers also found success in the 1970s with such hits as "Shaft" and "Sweet Sweetback's Baadasssss Song". Like other sequels in the 1970s, "Shaft" went on to have two more adventures, each less successful than the last.