Germany didn't become the epitome of evil (as an aside, do a little thought experiment and project what response you'd get if you said that Israel is the epitome of evil: there are good ways and less good ways of saying things...). A vicious, fascist regime hoodwinked the German people into believing in them and demonising an enemy within that wasn't an enemy at all. The German people were and are no different from people anywhere else. They were extremely vulnerable to that kind of persuasion as a result of the privations visited on them following WW1. Yes we have the heads-up but complacency is dangerous. You have to stop Trump from running again, as he's sure to win if he's allowed to. That'll be a damn sight bigger mess than even Texas (or Boris Johnson, come to think of it) could manage.