The murder of the European Jews

International Holocaust Remembrance Day, is an international memorial day on 27 January commemorating the victims of Nazi regime and its collaborators.
On 27 January 1945,  Auschwitz-Birkenau, the largest Nazi death camp, was liberated by Soviet troops.

* In Judaism, Shoah (שואה), meaning “calamity” in Hebrew, became the standard term for the 20th century Holocaust