Connecticut school shooting revives gun debate

Lindsay Merikas, 26, of Alexandria, Va., wears a button saying "Stop Gun Violence" as she gathers with other supporters of gun control on Pennsylvania Avenue in front of the White House, in Washington, Friday, Dec. 14, 2012, during a vigil for the victims of the shooting at Sandy Hook Elementary School in Newtown, Ct., and to call on President Obama to pass strong gun control laws. (AP Photo/Jacquelyn Martin) Photo by STF
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