Mother Jones magazine has revealed a well-known activist in the gun control movement is actually a secret spy for the National Rifle Association and the gun lobby. Over the past decade, the woman, Mary Lou Sapone, managed to become active in almost every single major gun violence prevention organization. Sapone, who went by her maiden name Mary McFate, helped organize the Million Mom March in 2000 and oversaw the lobbying efforts of States United to Prevent Gun Violence. We speak with investigative journalist James Ridgeway, who helped break the story, and Barbara Hohlt of States United to Prevent Gun Violence, who knew and worked with Sapone. [includes rush transcript]