Visitors walk past a guard tower at Auschwitz-Birkenau during a ceremony marking the 65th anniversary of the liberation of Auschwitz camp by Soviet troops and to remember the victims of the Holocaust, in Auschwitz Birkenau January 27, 2010. [Photo/Agencies]

Visitors walk at the former Auschwitz-Birkenau death camp in Oswiecim January 27, 2010. Survivors from Auschwitz, veterans and international leaders including Israeli Prime Minister Benjamin Netanyahu participated on Wednesday in ceremonies marking the 65th anniversary of the liberation of Auschwitz camp by Soviet troops and to remember the victims of the Holocaust.  [Photo/Agencies]