"A non would be a non-paedosexual. That's what defines them and that's it. An anti would be someone, either a paedosexual or non, who is aggresively anti-paedosexual. "

Close. We usually define a Non as a non-pedophile who is also not an Anti. Not necessarily friendly, just not hostile. While some Antis are non-pedophiles, we would not call them Nons.

Of course, Non and Anti are more prefixes than terms in their own right, so think of them as a useful shorthand and no more.