What does authoritarian mean?
requiring acknowledgment of authorship
requiring strict obedience to an authority, such as a dictator
ruling by aristocracy
ruling authority is granted to individuals by the government

Authoritarian means requiring strict obedience to an authority, such as a dictator.

For dictators it is often said that they were authoritarian figures because rhey required absolute and complete obedience from their subjects, without questioning their capabilities. 

Ok what subject does the question need tone in? thanx