Stones lie on an Auschwitz-Birkenau memorial stone during the international Holocaust remembrance day at the former Nazi concentration camp Buchenwald near Weimar, Germany, Monday, Jan. 27, 2014. The Soviet army liberated the largest Nazi death camp in Auschwitz, Poland on Jan. 27, 1945, where some 1.5 million people, mostly Jews were killed. (AP Photo/Jens Meyer)