I did not try argue that brothers bear zero responsibility, au contraire. It was a complex mix of external and internal circumstances and influences that result

I did not try argue that brothers bear zero responsibility, au contraire. It was a complex mix of external and internal circumstances and influences that resulted in tragedy. Just like some people are more prone to alcoholism, others are prone to extreme violence when they find themselves cornered. The question is could we at least argue that both human agency and environmental influences can be considered equally important? Also the mentality, "My life is good, I do not care about you, you are on your own, loser" is another problem I see. People barricade themselves in gated communities and pretend everything is peachy around them failing to see interconnectedness. Then when crap hits the fan everyone is like very surprised why it happened.