The records of the Wannsee Conference

By January 1942, he had decided that the Jews, Slavs, and other deportees considered undesirable should be killed. The genocide was organised and executed by Heinrich Himmler and Reinhard Heydrich. The records of the Wannsee Conference, held on 20 January 1942 and led by Heydrich, with fifteen senior Nazi officials participating, provide the clearest evidence of systematic planning for the Holocaust.