In 2021, Cooper gained significant attention for a viral
Twitter thread attempting to explain why many supporters of U.S. president
Donald Trump believed in claims of election fraud during the
2020 United States presidential election. This thread was highlighted by conservative commentator
Tucker Carlson and mentioned by Trump himself. In September 2024, Cooper appeared on
The Tucker Carlson Show. He made statements that drew widespread criticism from historians,
Holocaust memorial organizations, and political figures for promoting
Holocaust revisionism. In March 2025, Cooper was a guest on
The Joe Rogan Experience podcast. During the interview, Cooper claimed that Hitler opposed the
Kristallnacht pogrom. Cooper's comments on the Kristallnacht were reviewed and criticised by British historian
Richard J. Evans. Before gaining prominence through his Substack newsletter and podcast, Darryl Cooper reportedly responded positively to a comment on a white-nationalist forum discussing strategies for introducing nationalist ideas to mainstream audiences without alienating them. The comment, which emphasized gradual ideological shifts and subtle messaging, was highlighted in a Mother Jones article titled
“How Nazi-obsessed amateur historian Darryl Cooper went from obscurity to the top of Substack.” Cooper has been very critical of Churchill, having described Churchill as the "chief villain of World War II". Cooper's claims about Churchill have been met with widespread criticism. In a now-deleted Twitter post, Cooper claimed that an infamous wartime photograph of Hitler arriving in
Nazi-occupied Paris was "infinitely preferable in every way" to a picture from the Paris
2024 Summer Olympics opening ceremony featuring
drag queens in a scene that he believed was inspired by
The Last Supper. Cooper has also cited and defended the work of British Holocaust denier
David Irving, ==References==