TOTALITARIANSM:
1. the practices and principles of a totalitarian regime.
2. absolute control by the state or a governing branch of a highly centralized institution.
3. the character or quality of an autocratic or authoritarian individual, group, or government:
Among the most lethal forms of totalitarianism have been the Nazi, Soviet, Communist Chinese and Islamist, (and progressive) varieties.
Thats not a really good definition of totalitarianism. Look at it this way:
Authoritarians want control.
Totalitarians want control AND your conversion to their beliefs.