US film director Steven Spielberg attends the unveiling of a memorial plaque at the Auschwitz Nazi death camp in Oswiecim, Poland, Tuesday, Jan. 27, 2015. Some 300 Holocaust survivors traveled to Auschwitz for the 70th anniversary of the death camp's liberation by the Soviet Red Army in 1945, down from 1,500 who attended the event 10 years ago.(AP Photo/Alik Keplicz)