Triumph of the Will (1935)

Leni Riefenstahl's documentary of the 1934 Nuremberg Nazi Party rally is considered one of the greatest propaganda films ever made and one of the most technically innovative documentaries in cinema history. Its sweeping camera movements, aerial photography, and musical synchronisation influenced every political film that followed. Riefenstahl claimed she was merely documenting an event, not promoting an ideology — a defence that raises the fundamental question of whether any documentary can be politically neutral.