A government that seeks to control every aspect of it's citizens lives
It would surprise me greatly if tvtropes has gone this long without this trope. But if it has indeed, then How Did We Miss This One?? Within a work, the government is a secretive and oppressive regime where everyone is afraid to speak out, for fear of being disappeared. They are a combination of the Police State (Order is enforced through extreme measures.), Surveillance State (Everyone is monitored), and Totalitarianism (Every aspect of citizen's lives is controlled by the state). No free speech or free will is permitted. You are a mere cog in the system. Conform or die. Will invariably feature a Secret Police.
Examples:Comic Books Film Literature