It felt like a summer of mass shootings. You probably heard about the killings in Charleston, South Carolina, where a white gunman opened fire inside a historic black church, and the shooting in Lafayette, Louisiana, where a man targeted moviegoers inside a darkened theater. Or the shooting in Chattanooga, Tennessee, where an armed attacker sprayed a military recruitment center with bullets. Here's one you may not have heard about. On Aug. 8, David Conley allegedly... (GunPolicy.org)