PeTA has had a few bad things happen in their name, and typically when that happens that organization kicks out whoever it is. Granted, the president is currently a dumbass, but a lot of the "high chairs" don't allow stupid shit.

ALF is the crazy one. They condone and encourage bombing and attacking major links in slaughterhouses and fur selling. Hell, they say how to make bombs on their website! They're a pretty terrorist organization.