The great Charles Chaplin in The Great Dictator (1940), a film written and directed by himself highly criticizing Hitler’s and Mussolini’s regimen of terror, violence and dehumanization. Here you have some trivia extracted from IMDb. - «Charles Chaplin said that had he known the true extent of Nazi atrocities, he could not have made fun of their homicidal insanity.» - «In Italy, all the scenes that involved Napaloni's wife were cut from the movie to respect Benito Mussolini's widow, Rachele. The complete version wasn't seen until 2002.» - «General Dwight D. Eisenhower personally requested French dubbed versions of this film from Charles Chaplin, for distribution in France after the Allied victory there.» - «When Charles Chaplin's young son, Sydney Chaplin, saw the scene where the artillery shell drops out of the supergun for the first time, he burst out laughing. It ruined the take.» - «Charles Chaplin spent hours studying films of Adolf Hitler to perfect an imitation of his speaking style. He would eventually do this with a combination of nonsense syllables and isolated German words.»