A difference in degree....and only a slight difference in kind. 1. Germany was in much greater turmoil in 1932 than the US in 2016. 2. Germany had a very weak democracy, and no cultural history of democratic self-rule. 3. Hitler was a sociopath, while Trump is a narcissist. While narcissists tend to be less prone to the sort of aggressive, exploitative (criminal) behavior that sociopaths are....they are still capable of it. Especially if they are motivated by the needs of their narcissm not being met.