To many Trump supporters, our bringing up the Nazi style propaganda is proof of our TDS.
The Trump administration clearly uses fascist/racist/other awful language/imagery/propaganda, etc., we point out how it is racist/fascist/etc. and then they accuse us of using violent rhetoric.
The thing is that Trump didn't turn these people fascist/racist, etc. They already were that way. He has given them reason to be open about it.
We can hope, of course, that they have pushed too far to turn enough people off. But we also should realize that there are more than we care to admit for whom the administration cannot push far enough.