Less than two months after Charlotte police shot and killed an unarmed man who was looking for help after having a car accident, a Michigan teen is dead under similar circumstances, shot in the back of the head as she was walking off the porch of a home where she reportedly sought help late at night. Renisha McBride, a 19-year-old from Detroit, is presumed to have been asking for help when she knocked on the door of a Dearborn Heights home at 2:30 A.M.