Strictly speaking, no activity and no industry is possible without a certain amount of violence, no matter how little. Even the very process of living is impossible without a certain amount of violence. What we have to do is to minimize it to the greatest extent possible.
The art of producing good music from a cultivated voice can be achieved by many, but the art of producing that music from the harmony of a pure life is achieved very rarely.
If we know how much passive violence we perpetrate against one another, we will understand why there is so much physical violence plaguing societies and the world.