A U.S. Secret Service officer stands guard in Lafayette Park at an entrance to the White House complex in Washington, after the whole complex was put on lockdown after firecrackers were thrown over ... more 
A U.S. Secret Service officer stands guard in Lafayette Park at an entrance to the White House complex in Washington, after the whole complex was put on lockdown after firecrackers were thrown over the White House fence September 16, 2013. The Secret Service said that a man threw firecrackers over the White House's north fence line on Monday, just hours after a deadly shooting rampage in the U.S. capital in which 13 people died. REUTERS/Jim Bourg (UNITED STATES - Tags: POLITICS CRIME LAW) less 
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Reuters | Photo By JIM BOURG / REUTERS
Mon, Sep 16, 2013 8:15 PM EDT