Harming others in physical, mental or moral ways.
Violence generally assures rapid, unquestioning compliance to a demand.
Violence produces violent responses, which generally escalate.
By avoiding any reasoning process, it produces only shallow, short-term compliance.
The truth of mankind requires that this battle be fought in ways consistent with human dignity. That is why the systematic and deliberate recourse to blind violence, no matter from which side it comes, must be condemned. To put one's trust in violent means in the hope of restoring more justice is to become the victim of a fatal illusion: violence begets violence and degrades man. It mocks the dignity of man in the person of the victims and it debases that same dignity among those who practice it. By the same token, the overthrow by means of revolutionary violence of structures which generate violence is not ipso facto the beginning of a just regime. A major fact of our time ought to evoke the reflection of all those who would sincerely work for the true liberation of their brothers: millions of our own contemporaries legitimately yearn to recover those basic freedoms of which they were deprived by totalitarian and atheistic regimes which came to power by violent and revolutionary means, precisely in the name of the liberation of the people. This shame of our time cannot be ignored: while claiming to bring them freedom, these regimes keep whole nations in conditions of servitude which are unworthy of mankind. Those who, perhaps inadvertently, make themselves accomplices of similar enslavements betray the very poor they mean to help. (Sacred Congregation for the Doctrine of the Faith, 1984).