Penn & Teller vs People for the Ethical Treatment of Animals

Non-Profits Wars and Secrets PETA is being watched by Peta Kills Animals. HSUS is being watched by HumaneWatch. These four groups are all non-profit organization, if I am not mistaken. First two groups are parading as animal rights group. The other two groups are antagonists to the first two groups. What are they quarreling about?…