Stephen Barton (3rd R), a shooting survivor in the Aurora, Colorado theater shootings, bows his head during a moment of silence at the Mayors Against Illegal Guns press conference and rally on Capitol... more 
Stephen Barton (3rd R), a shooting survivor in the Aurora, Colorado theater shootings, bows his head during a moment of silence at the Mayors Against Illegal Guns press conference and rally on Capitol Hill in Washington September 19, 2013. Carl Brooks (L) and Dianthe Martinez (2nd L) of West Orange, New Jersey also attend; both lost loved ones to gun violence. REUTERS/Gary Cameron (UNITED STATES - Tags: POLITICS CIVIL UNREST) less 
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Reuters | Photo By GARY CAMERON / Reuters
Thu, Sep 19, 2013 1:49 PM EDT