- See the article on The Holocaust for the main description of Holocaust revisionism.
Historical revisionism refers to revisions of official or 'received' portrayals of the past.
Harry Elmer Barnes, one of the most influential revisionists, wrote that "Revisionism means nothing more or less than the effort to correct the historical record in the light of a more complete collection of historical facts, a more calm political atmosphere, and a more objective attitude. It has been going on ever since Lorenzo Valla (1407-1457) exposed the forged Donation of Constantine, which was a cornerstone of the papal claim to secular power, and he later called attention to the unreliable methods of Livy in dealing with early Roman history. Indeed, the Revisionist impulse long antedated Valla, and it has been developing ever since that time. It had been employed in American history long before the term came into rather general use following the first World War."
- Revisionism and the Promotion of Peace https://codoh.com/library/document/186/