The reality of the efforts to exterminate Jewish and other peoples in Nazi Germany during World War II is questioned and denied by a range of groups supported by revisionist historians.
Denial of the Holocaust has grown more widespread, especially among extremist right wing and neo-Nazi groups.
The insistence on documentary proof discounts the emotional testimony of survivors and legitimizes the arguments of revisionists who then become the point of reference for future debate on the matter.
Since the end of World War II, the story of the Holocaust has been presented numerous times in courtrooms in many countries. In the Nuremberg trials, the subject was raised as a war crime, crime against humanity and genocide. The Holocaust was brought up again in trials of individual war criminals such as Hans Frank in Poland and Dieter Wisliceny in Czechoslovakia. The Jewish tragedy emerged in each of these trials as part of a larger story and in the context of the narrative of the Second World War and the German occupation of the countries in which the trials took place. It was during the Eichmann trial in Jerusalem in 1961, however, that a much fuller account of the Jewish catastrophe was revealed. Indeed, one of the goals of the trial was to present a comprehensive recounting of the Holocaust in the context of Jewish history, Nazi antisemitism and the war. Following the Eichmann trial, and in many respects under its impact, many trials of Nazi perpetrators took place in Germany, such as the Auschwitz trials in the 1960s, the Einsatzgruppen trials and others.