Watch Chaplin's The Great Dictator and it's really amazing when you realize it came out in 1940 and was created in the late 30's, right when Hitler was seizing power and starting WW2. Chaplin was a genius and realized the most powerful way to hurt Hitler was to make him look like a fool and mock him. Its monologue is an equally unforgettable scene: https://www.youtube.com/watch?v=J7GY1Xg6X20