If you want something to be true and feel as if it’s true then you’re likely to believe it’s true.

Facts usually don’t change people’s mind and might make them defensive about their views because if they’re wrong it will hurt them personally in the ego and self esteem.

I can fully see how something like feeling superior can fit into that. This includes others being inferior as a corollary.

Then you mix in anger. You are angry and stressed about the current situation and then somebody that speaks well and is smarter than you in your opinion says “blame immigrants”.

This fits in the world view.

Then you can go online and see other people and they say “Nazis didn’t have this problem because they fixed it”. So you in your newfound and knowledge go out and tell people unapologetically and if anybody inferior, that makes you angry, says anything bad things can happen.

There’s a path to become a Nazi. I think people don’t intend to be bad, they care about people, Nazis don’t think everyone should count as people. It’s societal cancer.