The main story of this film is about the success and failure of a man, seemingly a very simple story, but it involves a lot of content. For example, the election system of American society, the darkness of American politics, the essence of the so-called "American democracy", the contradiction between the rule of man and the rule of law, etc., as well as the overall view of the film: good is born of evil. This is a film worth thinking about, even if it was shot in the 1940s, even if it has been more than 60 years ago, these will not make it behind The Times.