Precisely how is an underground movement that cannot spread their ideas in public going to repeat the holocaust? How is forcing people to stay silent about their nightmarish beliefs going to possibly be worse than what we've already witnessed?
People just take it as an axiom that forcing ideas underground makes things worse but that seems like an idea that requires some support.
Racism is a security vulnerability in our brains. These ideas aren't propagated through reason. They are propagated by exploiting cognitive loopholes. Sitting down with your kid and showing them a whole bunch of fascist propaganda and then having a rational discussion with them isn't going to have the effect you want.
