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.
Mental violence has no potency and injures only the person whose thoughts are violent. It is otherwise with mental non-violence. It has potency which the world does not yet know.
Look at the Afghans, during the time of the Soviet invasion. They were among the poorest Muslims in the world, yet they were sustained by their faith in God, and God alone.