Don't Be a Sucker is a short film produced by the United States Department of War released in 1943, and adapted as a slightly shorter version in 1947. It has anti-racist and anti-fascist themes, and was made to educate viewers about prejudice and discrimination. The film was also made to make the case for the desegregation of the United States armed forces. It is held for preservation by the U.S. National Archives.

Plot: An American Freemason who has been listening to a racist and bigoted rabble-rouser, who is preaching hate speech against ethnic and religious minorities and immigrants, is warned off by a naturalized Hungarian immigrant, possibly a Holocaust survivor or escapee, who explains to him how such rhetoric and demagoguery allowed the Nazis to rise to power in Weimar Germany, and warns Americans not to fall for similar demagoguery propagated by American racists and bigots.