@JDX
I am mostly anti-censorship and I wouldnt ban people for these conspiracy theories to be honest. Some people take comfort in their beliefs and some people just dont know any better. We dont censor a kid for believing 2+2 <> 4, we teach them. Some people also seem to have a problem with being wrong and are unable to handle it, which I think might have something to do with the education system where right answers are expected and trial/error is unappreciated.
The other problem with censorship is that while it might seem righteous in the right hands, the wrong hands would misuse it. So banning nazi's might seem right but do we ban communists? Yet people with those beliefs will never learn if they lurk in the dark with their beliefs. A guy with a sandwich board shouting about the end of the world 'praise jesus' is better for the world to see than to be banned.