Trust me, PETA could be worse. They could be like ALF (The Animal Liberation Front.) Essentially, while they aren't really an organization, due to their lack of structure or leadership, is considered a domestic terrorist organization. While they, officially, are not supposed to harm humans, they have committed terrorist acts such as mailing letterbombs, and sabotaging facilities with bombs.
Edit: I still hate PETA though, because they are complete hypocrites about a lot of things. For instance, the main cause of animals dying out is habitat loss, such as when trees are cut down to make paper, like what protest signs are made of. Or the famous "pour red-paint on people wearing fur-coats" thing, I have to ask, where do they think that red paint comes from?
I can't remember who exactly said it, but I remember someone once said that he thought that PETA must actually be corporate propaganda to ENCOURAGE people to eat meat, and I agree. Typing about PETA makes me want to just eat a big juicy steak, or something. Actually, on that note, typing about PETA makes me feel like I would prefer dirt over plant-based foods.
Okay, rant over...