Meeting the Man Who Killed My Son
Two fathers channel their grief and rage into gun violence prevention
Gun violence Greg Gibson, John Rosenthal
Greg Gibson, father of gun victim, lobbies at the Statehouse
Greg Gibson, Author of "Gone Boy"
Greg talks with the school shooter who killed his son 25 years ago | StoryCorps
Cape Ann Report - School Safety in the Wake of Parkland
Greg Gibson & JoeAnn Hart