The Rachel Maddow Show 05/10/13

Parents of children killed by guns undeterred in fight for change

Mark Barden, father of Daniel Barden, a victim of the Sandy Hook gun massacre, talks with Rachel Maddow about the resolve of his Newtown peers and gun safety advocates across the U.S. to see that something is done to correct America's dangerous gun ... more Duration: {{video.duration.momentjs}}