During his bad period, Ivan the Terrible organized a secret police who killed everyone whom he thought might be a traitor.
Ivan the Terrible came to the throne in 1533. He was named Ivan the Terrible because he ruled by terror. This happened after his wife died. However, he also reformed Russia during his good years.
You would be talking about the one and only, Benito Mussolini. An italian politician, journalist, and well known facist, or a one part dictator.
They did not want their people to turn against them if they believed in different things. Roman leaders wanted to take control since they had the power to do it. Even as a republic, only some men have the right to speak.