"Admiration I did not feel. Sympathy I felt in the sense that I would feel it for a rabid dog, while accepting that it must be destroyed. I do not feel the film provides "a sufficient response to what Hitler actually did," because I feel no film can, and no response would be sufficient. All we can learn from a film like this is that millions of people can be led, and millions more killed, by madness leashed to racism and the barbaric instincts of tribalism."
January 1, 1970
https://en.wikiquote.org/wiki/Roger_Ebert