Yes, sometimes, you have to understand that ill-will is ill-will. The person wont just stop beacause it hurts you, because it's wrong, beacause it's prohibited: they made a decision, and it indeed is often hard to understand to motivation of such people, to change their views, and to do so in time. Violence allows to beat one into surrendering, either silencing them for a while, or outright breaking them. A fearsome tool, yet it only allows opression, never actualy solving the misunderstandings; i deem neither of the extremes - pacifism, tyranny - viable, but agree that the use of violence must be kept at bay.