This camp was deep in the mountains of Mexico, and Rosalio was there for six months, slowly being turned into a human weapon. “They just teach you everything. Everything you learn at a military camp,” he says. “How to shoot, how to coordinate . . . All kinds of explosives, handguns, rifles, hand-to-hand combat.” The camp’s slogan is “If I retreat, kill me.” He used these skills to murder more people than he can count. He committed industrial killings, threw hand grenades into crowded nightclubs, and shot a man in front of his toddler son and pregnant wife.
