The concept that certain regimes — Nazi Germany, Stalinist Russia, Maoist China — represent a qualitatively new form of political domination that goes beyond traditional despotism, seeking not merely to control behavior but to transform human nature, abolish private life, and mobilize entire populations toward ideological ends.
Totalitarianism is not just a harsh dictatorship. It is the claim that a regime can and should remake human beings — not simply govern them. That ambition, and the terror it produced, is what the twentieth century's worst regimes shared, and what made them different from the tyrants who came before.