This isn't exactly a claim based in reality. Republicans get most of their vote from poorer non-coastal rural communities. Elites (educated, professionals, academics, tech workers, ...) vote Democrat.
People wearing Camp Auschwitz t-shirts are declaring themselves to be Nazis.
People wearing 6MWNE t-shirts are declaring themselves to be Nazis.
A new congressional rep quoting Hitler approvingly is a Nazi:
https://www.wcia.com/news/politics/lawmakers-governor-condem...
People supporting Nazis are Nazis.
Salesforce doesn't want to be aligned with Nazis. Neither do I.
People wearing Che Guevara t-shirts are declaring themselves to be Communists.
People wearing hammer and sickle t-shirts are declaring themselves to be Communists.
People supporting Communists are Communists.
Communism killed many more people than Nazism did.