Right or Left? Wrong question.

RTWT
Socialist Academics Contributed to the Rise of the Third Reich

Indeed they did.

Can anyone offer a single consequential difference between Fascism/Nazism and Communism/Socialism/Marxism?

Specifically, please explain the claim that Nazis are right wing, but Communists are left wing. If you really want to assist me, tell me how Antifa can possibly be anti-Fascist.

Seems to me those various labels just cover minor squabbles among the Totalitarianists. Cosmetic distinctions.