In 1936, when the Nazis banned the novels of Sax Rohmer in Germany, because they believed him Jewish, Rohmer denied being racist and published a letter declaring himself "a good Irishman", yet was disingenuous about the why of the Nazi book-ban, because "my stories are not inimical to Nazi ideals." In science fiction cinema, the "futuristic Yellow Peril" is embodied by Emperor Ming the Merciless is an iteration of the Fu Manchu trope who is the nemesis of the Flash Gordon; likewise, Buck Rogers fights against the Mongol Reds, a Yellow Peril who conquered the U.S. in the 25th century.