A Brooklyn, New York, teenager lost his arm in a Craigslist robbery gone wrong on Friday afternoon, authorities said. Police say the 17-year-old boy connected with a man on Craigslist who was selling a pair of Air Jordan sneakers. They met about 1 p.m. in the Canarsie neighborhood, where the teen got into the seller's SUV and pulled out a gun, police said. The teen stole the sneakers and then walked away. He walked across the street with a bag apparently holding the sneakers, and the theft victim made a U-turn, stepped on the gas and ran over the teenager,...