At age eleven, Kenan Trebincevic was a happy, karate-loving kid living with his family in the quiet Eastern European town of Brcko. Then, in the spring of 1992, war broke out and his friends, neighbors and teammates all turned on him. Pero - Kenan's beloved karate coach - showed up at his door with an AK-47 - screaming: "You have one hour to leave or be killed!" His only crime: he was Muslim.