The reactionary right needs no more feeding, its belly is already full.
I studied history in a state that used to be part of the Nazi empire. I know how they rose to power. The key factor was von Papen, a weak conservative who enabled them, vaguely the equivalent of establishment Republicans today.
I can also tell you that the pre-Weimar warnings ring a bit hollow when we already have some post-Weimar circumstances, like far-right paramilitaries patrolling cities and shooting dissenters.
Political Violence has already undermined law and democracy. Right now, ICE goons are brutalizing a Latino family somewhere. Right now, a war with no democratic backing rages on - a war that has already seen a school bombed.
Why is it that one dude bombing a CEO's house is worthy of so much more condemnation than the above? That, to me, feels like a more interesting question to answer, because of what it says about the ruling ideology and how it's normalized its own violence.