Why not? Violence is a tool like any other, and our entire western society is predicated on it. We are cogs in a corporate-run state and if we don't like it, there is the police force. If we get evicted, the police is there to tell us to stop sleeping on the bench. If we don't listen, they have the guns. The underlying systemic violence of our society is rampant.
Personally, while I neither like nor dislike violence, it can be a useful tool in revolutions where the state has become incompatible with the needs of the majority.