So often its impossible to get past the ideology and the psychological frameworks and conditioning that undergird violence. Then too there is the question of what constitutes “common good” (especially when considered from a political perspective)?
However, Merton’s defining of “nonviolence” has significant merit, not least in terms of, at the very least, beginning the conversation.
"Nonviolence seeks to ‘win’ not by destroying or even by humiliating the adversary, but by convincing [the adversary] that there is a higher and more certain common good than can be attained by bombs and blood. Nonviolence, ideally speaking, does not try to overcome the adversary by winning over [them], but to turn [them] from an adversary into a collaborator by winning [them] over."
—Thomas Merton, from Faith and Violence: Christian Teaching and Christian Practice