According to Jürgen Trimborn's biography of Nazi propaganda filmmaker Leni Riefenstahl, both Chaplin and French filmmaker René Clair viewed Riefenstahl's "Triumph of the Will" together at a showing at the New York Museum of Modern Art. Filmmaker Luis Buñuel reports that Clair was horrified by the power of the film, crying out that this should never be shown or the West was lost. Chaplin, on the other hand, laughed uproariously at the film. He used it to inspire many elements of "The Great Dictator", and by repeatedly viewing this film, Chaplin could closely mimic Hitler's mannerisms.