The notion that communism and Nazism are polar opposites…

““The notion that communism and Nazism are polar opposites stems from the deeper truth that they are in fact kindred spirits. Or, as Richard Pipes has written, "Bolshevism and Fascism were heresies of socialism". Both ideologies are reactionary in the sense that they try to re-create tribal impulses. Communists champion class, Nazis race, fascists the nation. All such ideologies--we can call them totalitarian for now--attract the same types of people. Hitler's hatred for communism has been opportunistically exploited to signify ideological distance, when in fact it indicated the exact opposite. Today this maneuver has settled into conventional wisdom. But what Hitler hated about Marxism and communism had almost nothing to do with those aspects of communism that we would consider relevant, such as the economic doctrine or the need to destroy the capitalists and bourgeoisie. In these areas Hitler largely saw eye to eye with socialists and communists. His hatred stemmed from his paranoid conviction that the people calling themselves communists were in fact in on a foreign, Jewish conspiracy. He says this over and over again in Mein Kampf. He studied the names of communists and socialists, and if they sounded Jewish, that's all he needed to know. It was all a con job, a ruse, to destroy Germany. Only "authentically" German ideas from authentic Germans could be trusted. And when those Germans, like Feder or Strasser, proposed socialist ideas straight out of the Marxist playbook, he had virtually no objection whatsoever. Hitler never cared much about economics anyway. He always considered it "secondary". What mattered to him was German identity politics.””

— Jonah Goldberg