Humans are a diverse species. Nazism has been proven to garner support with a charismatic and dedicated enough propaganda program. Pockets keep emerging in various states over and over and over again. Shout something enough and you will gain followers. See: every cult in existence, every ideology based on extermination in existence, and just about any unhealthy belief system in existence. To believe that everyone will naturally reject Nazism is to be ignorant.
I read some of your posts earlier in this thread. You were arguing that punching a Nazi back in 1920s Germany wouldn't have stopped the rise of the NSDAP. I pretty much agree with that. In fact I think it has the opposite effect. I think it gives Nazis the ability to play the victim card, which is a method by which they gain more supporters. In fact as far as I know they received a lot of support in Germany partly because people were sick of violent communists, no?
I think there's two things to consider here. One is nationalist ideals. I think by and large people can be receptive to nationalist ideals, especially from a charismatic leaders, ie. Trump. In my opinion I think this is because nationalism is fundamentally a
good idea which resonates with people.
But then when we consider the genocidal aspects of Nazism, which is what I think you are mostly scared of here, I don't people will ever be receptive to such a thing. As far as I'm aware, the Nazis did not literally have in their party platform to 'gas six million Jews'. I think if they did, they wouldn't have gotten into power, because people are generally
good and don't want to commit genocide. Do you disagree with that?
If we're going to believe in democracy, then we need to believe that people are going to be able to make the right decisions. To say that certain ideas are too dangerous for people to hear suggests to me that you don't actually believe democracy can work. If people can't even be trusted to not support politicians who openly want to commit genocide, can we even have a democracy at all?