I’m not blanket supporting the end results of everything, but the “violence” in those revolutions was initiated by the existing states, not by the people doing the revolution. Read up about it. Almost every time the workers just required the obvious (not to be crushed underfoot) and started seizing factories and farms when life became intolerable, and then the state and the rich brought the police and the army to kill them. Sometimes the end result of the state oppression was people trying to survive and opportunist authoritarian leaders taking power, but not always.