In 2005, on the 60th anniversary of the liberation of Auschwitz, a United Nations resolution designated 27 January as an annual International Day of Commemoration in memory of the victims of the Holocaust. The word ‘Holocaust’ is of Greek origin and means ‘sacrifice by fire’. It is used to describe the persecution and subsequent mass murder of 6 million Jews in Europe at the hands of the Nazi regime and its collaborators. Between 1933 and 1945, other groups were also targeted by the Nazi regime and its allies, including Roma people, disabled people, Slavic people, as well as homosexuals, and members of certain religious and political groups.