[ModernMech]

The defining characteristic of Nazis is authoritarian megalomania, something Musk has in spades. The hand gesture is how they identified themselves and professed their allegiance to the cause, something Musk has adopted. He's telling us who he is, we should listen.

The gas chambers are their most horrific deed, but Nazis were still Nazis before they gassed anyone. Therefore gassing does not define them.

The key to stopping Nazis is to do so before they get the gas chamber stage. If you let it get that far, you're too late. So you have to rely on other clues.

Nazi salute are about as oblique as you can get. They should have been a wakeup call.