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Open Image ModalPersons walk through the holocaust memorial in Berlin, on a sunny but cold Monday March 25, 2013. (AP Photo/dpa, Markus Heine) (credit:AP)
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Open Image ModalRelatives of Holocaust victims lay flowers next to the names of concentration camps during a ceremony marking the annual Holocaust Remembrance Day at the Yad Vashem Holocaust Memorial in Jerusalem, Monday, April 8, 2013. (AP Photo/Oded Balilty) (credit:AP)
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Open Image ModalPhoto shows the house where Anne Frank lived in Amsterdam and where she hid with her parents to escape from Nazis between June 1942 and August 4, 1944. (DESK/AFP/Getty Images) (credit:Getty Images)
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Open Image ModalA woman crouches next to candles lit to commemorate victims among cast iron shoes, a memorial of Holocaust victims on the bank of River Danube, in Budapest, Hungary, Tuesday, April 16, 2013. (AP Photo/MTI, Noemi Bruzak) (credit:AP)
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Open Image ModalBritain\'s Archbishop of Canterbury Justin Welby, visits the Hall of Names at the Yad Vashem Holocaust memorial in Jerusalem, Thursday, June 27, 2013. (AP Photo/Sebastian Scheiner) (credit:AP)
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Open Image ModalGeorgian Prime Minister Bidzina Ivanishvili lays a wreath at the Hall of Remembrance at the Yad Vashem Holocaust memorial in Jerusalem, Monday, June, 24, 2013. (AP Photo/Dan Balilty) (credit:AP)
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Open Image ModalIn this picture amde available Wednesday April 17, 2013 a man touches his forehead in front of the Victims\' Memorial Wall during a ceremony in the Holocaust Memorial Centre in Budapest, Hungary, Tuesday, April 16 2013. (AP Photo/MTI, Tamas Kovacs) (credit:AP)
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Open Image ModalRep. Chris Van Hollen, D-Md., center, and Holocaust survivors Inge Berg Katzenstein, right, and her husband, Werner Katzenstein, left, light a memorial candle during a Days of Remembrance ceremony in the Capitol Rotunda on Capitol Hill in Washington, Thursday, April 11, 2013. (AP Photo/Kevin Wolf) (credit:AP)
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Open Image ModalU.S. first lady Michelle Obama visits the Holocaust Memorial to the Murdered Jews of Europe in Berlin on June 19, 2013. (JOERG CARSTENSEN/AFP/Getty Images) (credit:Getty Images)
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Open Image ModalU.S. Secretary of State John Kerry reflects for a moment after placing a wreath from the United States at the Yad Vashem memorial during Holocaust Remembrance Day in Jerusalem, Israel Monday, April 8, 2013. (AP Photo/Paul Richards, Pool) (credit:AP)
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Open Image ModalA person climbs on a Holocaust memorial statue in Rabin Square in Tel Aviv, Israel, Sunday, March 24, 2013. (AP Photo/Ariel Schalit) (credit:AP)
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Open Image ModalIn this picture made available Wednesday April 17, 2013, a woman lights a candle to commemorate victims among cast iron shoes, a memorial of Holocaust victims on the bank of River Danube, in Budapest, Hungary, Tuesday, April 16, 2013. (AP Photo/MTI, Noemi Bruzak) (credit:AP)
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Open Image ModalNobel Peace Prize laureate and Holocaust survivor Elie Wiesel lights a candle as he toured the Hall of Remembrance at the Holocaust Memorial Museum, with President Barack Obama, Monday, April 23, 2012, in Washington. (AP Photo/Carolyn Kaster) (credit:AP)