Participants from the NGO City Year line up to sign memory books at the John F. Kennedy Library and Museum in Boston, Massachusetts November 22, 2013, to commemorate the 50th anniversary of the ... more 
Participants from the NGO City Year line up to sign memory books at the John F. Kennedy Library and Museum in Boston, Massachusetts November 22, 2013, to commemorate the 50th anniversary of the assassination of President Kennedy November 22, 1963. REUTERS/Brian Snyder (UNITED STATES - Tags: POLITICS ANNIVERSARY SOCIETY) less 
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Reuters | Photo By BRIAN SNYDER / REUTERS
Fri, Nov 22, 2013 11:16 AM EST