Robert Faurisson (French: [foʁisɔ̃]; born Robert Faurisson Aitken; 25 January 1929 – 21 October 2018) was a British-born French academic who became best known for Holocaust denial. Faurisson generated much controversy with several articles published in the Journal of Historical Review and elsewhere, and by letters to French newspapers, especially Le Monde, which contradicted the history of the Holocaust by denying the existence of gas chambers in Nazi death camps, the systematic killing of European Jews using gas during the Second World War, and the authenticity of The Diary of Anne Frank.
https://en.wikipedia.org/wiki/Robert_Faurisson