Even if they didn't kill animals, they are a reprehensible organization. They directly (by means of funding) support the ALF, which firebombs medical research facilities and launches personal attacks on anyone they see as hostile to their cause. They aren't just pro-animal, they're anti-human. The activities of the ALF and the group as a whole are outside of US law, so any organization that gives them aid should also be outside of the law.
Moreover, I have a major ethical qualm with the suggestion that animal life is anywhere near as valuable as human life and I have a major ethical qualm with any group that emphasizes "animal rights" over human rights.
Moreover, I have a major ethical qualm with the suggestion that animal life is anywhere near as valuable as human life and I have a major ethical qualm with any group that emphasizes "animal rights" over human rights.