The rhetorical value of comparing anything to Hitler or Nazi Germany or the Holocaust is heavily outweighed by the fact that your audience will immediately assume you're a dumb-ass or a hysterical loonie.
-k
All the same I think its fair to compare Hitler's audience to Trump's, especially in light of the the way over 90% of Republicans in Congress still refuse to abandon Trump. The fundamental question surrounding Hitler's rise to power was how it happened and now it seems patently clear.