When Daniel Penny wrapped his arm around the neck of a homeless man on a Manhattan subway last year, the 25-year-old veteran appeared to be deploying a non-lethal chokehold long drilled into U.S.

A teen boy was beaten up and left barefoot during a robbery in Norwood, police say. According to police, three people punched the 16-year-old, causing him to fall to the ground. They then repeatedly ...