It would be hard to get statistics on violent death -- what do you count as murder? When people starve to death because of policies of governments and corporations, is that murder? Nature does a fair amount of murdering itself, which is why this whole notion of dominating nature arose: it was one of those things that seemed a good idea at the time. No one ever believes a cure will prove worse than the disease. And maybe it isn't. An invasion of microbes that destroys a body could also be called murder. All deaths are violent deaths, I suppose.