The difference between a democracy and a dictatorship is that in a democracy you vote first and take orders later; in a dictatorship you don’t have to waste your time voting.
Power is not a means, it is an end. One does not establish a dictatorship in order to safeguard a revolution; one makes the revolution in order to establish the dictatorship. The object of persecution is persecution. The object of torture is torture. The object of power is power.