1 of 65: A banner hangs from an overpass encouraging passing motorists to honk their horns in support of the Sandy Hook Elementary School shooting victims, 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. (AP Photo/David Goldman) ( Photo)

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