An example of a dictator is

idi amin
aristotle
tony blair

Tony Blair was not known as a dictator, nor did Aristotle. Aristotle was a philosopher and scholar of ancient Greece and considered one of the fathers of Western philosophy. Tony Blair was Britain's prime minister between 1997 and 2004.

Idi Amin, one of the most famous dictators of the twentieth century, was a politician and a military officer, ruled Uganda from 1971 to 1979. His reign was known for brutality.