A Pittsburgh 15-year-old is accused of randomly lashing out, punching a teacher in the face, as they crossed paths in an alley.
Video shows the boy stepping out and punching the passing man. His head hits a curb. The victim lies completely still as the boy walks away among a group of other young people.
KDKA.com in Pittsburgh reports that the victim, an English teacher from CAPA, the Philadelphia High School of Creative and Performing Arts, was knocked out by the punch, which police called a "random, cowardly act."