Gun control advocates hold vigil in front of White House in Washington DC in aftermath of Connecticut shootings

Tom Harvey (L) and his wife Pat Powers, of Rockville, Maryland, hold a gun control banner in front of the White House, December 15, 2012, in Washington, DC, in the aftermath of the shooting rampage at Sandy Hook Elementary School in Newtown, Connecticut, that left 26 dead, including 20 children. The gunman, Adam P. Lanza, 20, killed himself at the scene. UPI/Mike Theiler