Lipstadt has served as the US Special Envoy to Monitor and Combat Anti-Semitism, a position in the US Department of State with the rank of Ambassador, since 2021.

• As a historian, she specializes in combatting Holocaust denial.

• In 1996, prominent Holocaust denier David Irving unsuccessfully sued Lipstadt for libel, which she wrote about in her book History on Trial: My Day in Court with a Holocaust Denier. In 2006, Irving was charged with Holocaust denial in Austria.