How is totalitarianism most exemplified by the scenario?

The specific answer depends on the nature of scenario, but, generally speaking, totalitarianism is exemplified by an obtrusive government that takes an active interest in every action a person performs. So, any action in a scenario where the government is persistently monitoring citizens, jailing political dissidents for "thought-crimes" or without evidence, or using strongly coercive techniques to enforce laws and government decisions.