This is all said long before Hitler was even a lunatic fringe candidate, though I repeat myself. Was Hitler always obsessed with race and Jew-hatred? Yep. Did his actions seem in accord with this? Amazingly so.

Take your comment on the USSR - why did Hitler insist on breaking the pact and invading Russian in winter? The answer is that he regarded Communism as "Judeo-Bolshevism", a Jewish plot against the Aryan race. Again, why did Nazism never take in the East when people began by welcoming the Wehrmacht's advance? Because in Nazi racial theory, Slavs were untermenschen. The whole course of the war is completely explicable by thinking that the Nazis actually believed what they said.

This is what I mean about some people not being able to understand that others have a radically different view of the world. You need to explain away just about everything about the Third Reich to imagine that its animating principle was something other than fanatical racism. You have to explain nothing if you make the contrary assumption.

What do you think animated Hitler? For that matter, what do you think animates jihadis?