"It's rare that anyone says what this medical study does, even if in the driest way possible "Being male has been identified as a risk factor for violent criminal behavior in several studies, as have exposure to tobacco smoke before birth, having antisocial parents, and belonging to a poor family". It's not that I want to pick on men. I just think that if we noticed that women are, on the whole, radically less violent, we might be able to theorize where violence come from and what we can do about it a lot more productively. Clearly the ready availability of guns is a huge problem for United States, but despite this availability to everyone, murder is still a crime committed by men 90 percent of the time."