We all hope for peace. Yet in the face of violence, it often seems the only recourse is more violence. Advocates of non-violence claim it’s not necessary to respond to war in kind, and that responding violently, even in self-defense, just perpetuates the cycle of violence. So how can we practice non-violence under the direct threat of violence? Can non-violent acts be spread to stop aggression and war? And are there times when violence is, in fact, necessary?