I'd prefer to kill as few cops, bosses, and landlords as possible during the transition to a world where cops, bosses, and landlords don't exist. But I expect most of the cops, bosses, and landlords to fight tooth and nail against such a transition, I expect many of those ways they'll fight back will be violence in their own right, and I don't expect a revolution to have the overwhelming force required to stop that violence without just killing the perpetrators.