Rejected: AZ gun shop owner cancels Mark Kelly's gun order

After Mark Kelly said that he would donate his recently-purchased, assault-style weapon to the police, an Arizona gun shop owner canceled Kelly's order because he said the weapon wasn't intended for "personal use."  MSNBC's Lawrence O'Donnell, Krystal Ball, and Ari Melber discuss why a gun supporter would want to take away anyone's Second Amendment rights.March 28, 2013