When did Holocaust conspiracy theories begin?

 Some historians say that Holocaust conspiracy theories began during WWII, but most believe they rooted right after the war. The first “debunker,” or person who discredits and exposes claims as being false or exaggerated, was Maurice Bardéche in 1947.  Bardéche spread his ideology through writing the books Letter to Francois Mauriac, Nuremberg of the Promised Land, and What is Fascism?. In these books, Bardéche discussed his opinion that he felt the Jews were the ones responsible for the Holocaust because they basically started the war by agreeing with the Treaty of Versailles. Bardéche also saw the Nuremberg trails as wrong in many ways, and defended them by saying that the Nazis were just an extremely strong army which was needed to defeat Stalin. Paul Rassiner was the next man to step forward with his denial by writing Debunking the Genocide Myth, which contained his most controversial argument. Rassiner supported the idea that the Nazis and the National Socialists were forcing people into these camps as a “gesture of compassion”. He claimed the Nazis were only in the concentration camps to “rehabilitate the strayed sheep and to bring them back to a healthier concept of the German community, [and]...its destiny."