THE WANNSEE CONFERENCE

When? 20 January 1942; What? The Wannsee Conference; Where? 56-58 Am GroBen Wannsee, a suburb of Berlin, Germany; Why? To plan the final solution to the Jewish question, whereby most of the Jews of German-occupied Europe would be deported to Poland and murdered.  The resulting "Death Camps" were liberated by Allied Armies, thus revealing to the world their grisly business in 1945.
When Hitler and his Nazi party came to power in January 1933 the Jewish population began to feel the pressure.  A Jew could not hold public office or obtain a Civil Service job.  All this done to pressure Jews to leave the country.  By 1939 some 250,000 Jews had Emigrated to the U.S., Palestine, Great Britain and other countries.
Businesses were boycotted and vandalized.  In 1935 laws were enacted that prohibited marriage between Jews and anyone of Germanic birth.  By decree a Jew was anyone with three Jewish grandparents or only two if they practiced the Jewish faith.  The killing also included gypsies, Prostitutes, Romani people and the mentally ill.
After the invasion of Poland in 1939 Hitler ordered the killing of the Polish leadership and intelligentsia. The SS was given the list of murders to be carried out.
After the start of Operation Barbarossa---the invasion of the Soviet Union, Comintern Officials, ranking members of the Communist party, extremists and radical members of the party were to be executed in addition to the Jews in party positions.
Poor harvests in 1940-'41 led to food shortages in Germany which led to the forced starvation of an estimated 4.2 million Soviet citizens in 1941-1944.  Such was Nazi Germany!.....Medicineman!
This from Wikipedia, and you may learn much from the entire piece!