So very hard to choose. Especially between PETA, Fundamentalist Christians, and Aggressive Fans. Overall though, I picked PETA.
My reason, PETA has gone to major extremes. Bombing animal testing buildings, funding legal assistance for those that do, and basically all around craziness. And let's not forget the hypocrisy of euthanizing most of the animals they "save". And uninformed people will blindly follow, thinking they're helping.
Fundamentalist Christians, the Westborough Baptist Church specifically is a group that is universally despised except by other Fundamentalist Christians. And even some of the Fundamentalists want nothing to do with WBC because of the whole protesting at the funerals of soldiers thing. Anyway, my point is that as far as I know, they've only protested. And while their actions are absolutely detestable and I wish I could beat them to death with their own signs, it's still not as bad as PETA in my eyes. (I'm probably going to catch so much flak for that.)
And Aggressive Fans. I can stand some of them, and as long as I avoid them I'm generally ok and I can keep my eardrums intact.