Today is International Holocaust Remembrance Day. While the world reflects, a tiny group of naysayers continue to doubt that the Holocaust ever happened.
It did happen. The American Historical Association affirmed in 1991 that "No serious historian questions that the Holocaust took place." It is a fact that 6 million European Jews were systematically murdered by Nazi Germany and its collaborators.
Reporter David Emery has looked at what drives some people to believe in the impossible.
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