Cornered against the tiles of a Hercules high school locker room, the boy takes blows to the head as the camera catches the action. Shouts of encouragement bounce off the walls. At least two boys take turns punching the boy in the face. The assault, later posted on the Internet, is real: Attackers crushed a 17-year-old's jaw, a juvenile is under arrest and police are seeking a young man. The group of males attacked the victim at the high school shortly before 1 p.m. May 6, said Hercules police Deputy Chief Tom Muehleisen. The footage then appeared on a Web...