Satire (1922), "Elmer Gantry" (1927; dedicated by Lewis to H. L. Menchen), and "It Can't Happen Here" (1935), and his books often explored and satirized contemporary American values. The film "The Great Dictator" (1940) by Charlie Chaplin is itself a parody of Adolf Hitler; Chaplin later declared that he would have not made the film if he had known about the concentration camps. In the United States 1950s, satire was introduced into American stand-up comedy most prominently by Lenny Bruce and Mort Sahl. As they challenged the taboos and conventional wisdom of the time, were ostracized by the mass media establishment
Charlie Chaplin take in "The Kid". For "The Immigrant", a 20 minute-short, Chaplin shot 40,000 feet of film – enough for a feature-length. Describing his working method as "sheer perseverance to the point of madness", Chaplin would be completely consumed by the production of a picture. Robinson writes that even in Chaplin's later years, his work continued "to take precedence over everything and everyone else." The combination of story improvisation and relentless perfectionism – which resulted in days of effort and thousands of feet of film being wasted, all at enormous expense – often proved taxing for Chaplin who, in frustration, would