(Discussing on wether Nazism is left or right wing)

Nazis and communists were every bit as different as Crips and Bloods. They hated each other, but their primary difference was in style. In the end, I think both ideologies defy right-left categorization (as do libertarians and some types of anarchists for the opposite reason) because they both wanted total control over people's actions and their livelihood under the pretence of caring for them.

That said, there are some eerie similarities between Nazis and the modern left (not the old one). The modern leftist is obsessed with race and putting people into groups, often based on race and national origin, but also sex and sexual orientation. While the Nazis had their "Aryan science" and "Jewish science", the modern left has "feminist science" and sciences for every oppressed group, all of which pretty much say logic itself is an invention of whatever oppressor is handy.