I grew up in Japan until I was 18, and experienced violence throughout my childhood. When one of my brothers and I turned 15, we started doing street fighting. We expressed all of our anger, frustration and hate from our childhood by doing street fighting - plus we really liked it. We could have ended up in prison from some fights and we also could have been killed. When we turned 20, we talked and we decided to draw the line and not do street fighting any more, because of the consequences of fighting, and the potential for criminal records (given it was illegal).