Totalitarianism was a form of government in which the state recognized no limit to its authority, controlling the lives of its citizens when and wherever possible. It was embraced by governing bodies such as the Cardassian Union and the Dominion.
In 2257, Emperor Georgiou criticized Admiral Cornwell's strategy to identify the Red Angel as gathering input and subsequently promoting debate, and recommended the use of "a little totalitarian efficiency". (DIS: "The Red Angel")
Tom Paris described the Nazis as "totalitarian fanatics bend on world conquest. The Borg of their day". (VOY: "The Killing Game, Part II")
In 1996, a stranded Captain Braxton referred to Officer Sims as a "quasi-Cardassian totalitarian." (VOY: "Future's End")
Real-life totalitarian regimes that were discussed in Star Trek included Nazi Germany and the Soviet Union.