In this Thursday, April 25, 2013 photo, video and imagery are seen 

In this Thursday, April 25, 2013 photo, video and imagery are seen during a preview of the new exhibit "Some Were Neighbors: Collaboration & Complicity in the Holocaust" at the United States Holocaust Memorial Museum in Washington.  The exhibition, opening April 30, 2013, includes interviews with perpetrators of collaboration and complicity in the Nazi genocide. (AP Photo/Carolyn Kaster)
Associated Press
In this Thursday, April 25, 2013 photo, video and imagery are seen during a preview of the new exhibit "Some Were Neighbors: Collaboration & Complicity in the Holocaust" at the United States Holocaust Memorial Museum in Washington. The exhibition, opening April 30, 2013, includes interviews with perpetrators of collaboration and complicity in the Nazi genocide. (AP Photo/Carolyn Kaster)
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