The government or authority of a tyrant; a country governed by an absolute ruler; hence, arbitrary or despotic exercise of power; exercise of power over subjects and others with a rigor not authorized by law or justice, or not requisite for the purposes of government.
Cruel government or discipline; as, the tyranny of a schoolmaster.
I do not deny that I planned sabotage. I did not plan it in a spirit of recklessness nor because I have any love of violence. I planned it as a result of a calm and sober assessment of the political situation that had arisen after many years of tyranny, exploitation and oppression of my people by the whites. Nelson Mandela