While what pathetic mayors like Di Blasio in NYC, and Garcetti in LA, have come far closer to Nazi-like, and Hitler-like, than Trump ever has, I will be consistent and say that there's no legitimate comparison between them and Hitler / Nazis.
While I am deeply concerned about the way they've trampled on the Bill of Rights, what they've done is nowhere near the evil that Hitler and the Nazis were capable of doing, and actually did. To suggest so, is just not legitimate.