It seems to me to go just so far as one is willing to believe thought can be a crime in itself.
"Oh so you believe this or that? Well you now embody those beliefs and are complicit in all crimes motivated by them. Your mere presence is oppressive to people who have been slighted by actions or words motivated by the same beliefs. May your career end and your friends abandon you."
It seems so to me as well. There probably are people who take it a bit too far, just as there are in most fan groups (e.g., people who get cosmetic surgery to look like anime characters, etc.), but I don't recall hearing of any rash of abuse cases involving Goreans (apologies if that's not the right term).
I'm wondering just how far this goes. I have a friend who participates in Civil War reenactments (again, apologies if I don't get the terminology right). He plays a Confederate, and spends a considerable amount of time and money getting his gear and persona as close to perfect as he possibly can. That doesn't mean he really believes in slavery, or even that the South should have won the Civil War. Quite the contrary -- I'm 100% sure that he doesn't believe those things. This is just something he does for fun.