If you look at the results of welfare programs, it would be hard to argue that they reduce crime. Crime isn't just about subsistence money. For a certain segment of the population, it's the only way to make significant amounts of money and also to get some sort of respect, status and power.

If criminals could just be educated and get jobs and become ordinary members of society, then our social programs would work. They don't, because from a sober perspective, if you're already a criminal (or so inclined), then crime is more attractive and ordinary members of society appear as the powerless suckers they really are.