Not all of them are, but I've come across A LOT who are. Especially on Tumblr. Saying shit like, ILL FUCKING SHOVE THAT BURGER DOWN UR THROAT SO U FUCKING DIE U WORTHLESS MEAT EATING PIECE OF SHIT

On the other hand, I have several vegan/vegetarian friends that I forget don't eat meat because they don't make a huge deal out of it.