Lt. J. Paul Vance of the Connecticut State Police conducts a news briefing, Saturday, Dec. 15, 2012 in Newtown, Conn. The massacre of 26 children and adults at Sandy Hook Elementary school elicited horror and soul-searching around the world even as it raised more basic questions about why the gunman, 20-year-old Adam Lanza, would have been driven to such a crime and how he chose his victims.
Section:Photo
