The part that bothers and even scares me is that people (perhaps OP) do see how their chain of logic follows through your example. But they agree with and don’t find it morally wrong.

It’s like there’s this bro-Catholicism where everyone has original sin of racism or whatnot and must be punished through ex-communication. And the whole moral system is understood and agreed to.

I only hope that some sort of racism/redeemer emerges who can wash away the sins of bigotry and allow the excommunicated to no longer cause racism and be allowed to work again within society.