"The Four Year War – The conflict that shattered the myth of the peaceful ape" documents the Gombe Chimpanzee War (1974–1978). Before this event, scientists believed chimpanzees were peaceful vegetarians. Jane Goodall watched in horror as the Kasekela community systematically hunted down and annihilated the Kahama community—apes that had previously been their friends and family. Author Helen Wild describes the brutal tactics: kidnapping, gang attacks, and celebration after kills. The violence was so shocking that Goodall famously said she woke up at night seeing the images. "The Four Year War" forces us to confront the darkness in our own DNA. It proves that war, territorialism, and calculated violence are not unique to humans, but deep-seated primate behaviors that predate civilization.