> It's not until you sit with someone and nut out what they mean by "authoritarian" and "censorship" and so on that you realise you're completely morally and politically opposed to them.

Shared enemies makes for strange bedfellows. If some group in power is threatening groups B and C, even if B and C otherwise hate each other they will band together and fight for their own survival.

Creeping censorship will ultimately always self-defeating for this reason. You'll win some early victories against the extreme fringe that no one supports, but it never ends there.