I like to see it as scales. You can put your weight on one side, the side of sound morals, or the side of initiation of force. Do not underestimate the power of your choice. Once a boy asked his grandfather what life was all about and the grandfather answered: there are two dogs inside all of us. One is friendly and true, the other is afraid and viscous. These two dogs fight until one of them wins. The boy asked: which one will win? The grandfather answered: the one you feed.
When we choose violence, we feed the wrong dog and that would be the real tragedy. It is all about your choices. Forget about what others do, luckily it's their problem and they will have to deal with the consequences.