Have you ever read Better Angels of Our Nature by Stephen Pinker?
https://en.wikipedia.org/wiki/The_Better_Angels_of_Our_Nature

I think he makes a very sound argument that governments reduce violence. I am a strong believer on non-violence and I don't think we should simply ignore the arguments being made by Stephen Pinker in his book. His conclusions are based on very in depth statistical analysis and are worth much consideration!