He served as the National Commander of the American Defenders, originally called the National Film Committee of American Defenders, an anti-Jewish fascist organization founded in 1929 by Pease. By the early 1930s, American Defenders became primarily a publisher for Pease's pamphlets. Although anti-Semitic, Pease opposed the policies of Germany's National Socialism. He also was an avid supporter of the American fascist Harold Keith Thompson Jr. and the anti-Semite William Gregg Blanchard II, the leader of the Los Angeles-based The White Front in the late 1930s and publisher of "Nation and Race" and author the booklet "Racial Nationalism."
