Violence is the worst part of life. Any type of violence, be it warfare, self defense, or even killing animals for food. But we can’t avoid some types of violence, like stepping on insects or killing pests. Life is a battle, everything in life is a fight of some sort.
The essence of yoga and the spirit of the Gita is to be victorious in life. To win. There is nothing better than doing one’s duty with skill and enthusiasm. If you are a soldier or a cop or a security guard, etc… then there is nothing better than the battle that duty entails.
The spirit of the Gita is to do one’s duty with power, skill, and mastery, and with no thought of results. Indifferent to success or failure, act with passion and enthusiasm. This is yoga.
Samadhi, or sartori, or kensho, or zen or whatever you call it is the ultimate attainment. Once you’ve conquered the self, then you are the champ and no one is better than you. To learn the folly of violence at a young age is called being precocious not being a coward. But our society doesn’t understand motives, because they are primitive and ignorant.
So I say, live and let die. You have a right to defend yourself, but violence is only justified in the preservation of human life. That is my notion and I hope someone out there agrees with me.