[DanHulton]

A very, very, very small percentage of the population is "violent sociopaths", though, and optimizing your society for solving that problem incurs huge amounts of waste.

Which isn't to say there should be _no_ answer to that question, but more that the answer to that question shouldn't also be the answer to all the other crime encountered. Not even all the violent crime, which is frequently a product not of the individual, but of the situation that individual is placed in.