Yeah, never quite got how in an internet full of Nazis and psychopaths, so many people decided that who they hated most was the guy who likes to dress as a neon-green wolf sometimes.
I think part of the reason why it developed this way is because (at least historically) the group of Furries has often consisted of many outcasts / people who had few friends otherwise or have been bullied. And the assholes that originally bully people then of course take everything they like as a further occasion to bully or make fun of them.