It's actually John Boyd's theory of moral conflict as the most determinative level of warfare. Nonviolent tactitions very often organize to bait an oppressive system into violent over-reaction.
Violence can certainly bring about short term gains for the perpetrators. I'm personally interested in changing the cycle of violence itself, more than replacing one violent actor by another.
I do have specifically marginalized groups of people who I try to help. But my most important project is being a decent human to those around me every day. It's not as easy as it sounds. It's second nature for all of us to pass on our past trauma and frustrations. In some ways it's easier to make a heroic and noble effort for some great cause than to put in the sustained effort every day to help the people around us. That's what I'm trying to do, certainly failing much of the time but trying to get back on my horse each time.