A methodical plan orchestrated by Hitler (and put into action with collaboration from Fascist governments in France, Hungary, Italy etc.) to ensure a "new racial order" through the elimination of Jews, non-conformists, Communists, homosexuals, Jehovah's Witnesses, non-Aryans, gypsies/Roma, and the mentally and physically disabled; it decimated most of European Jewry and many who remained fled to the post-WWII newly created nation of Israel or to the Americas