> Nevertheless it's not hard to find studies documenting the very strong link between poverty and (certain types of) crime [0].

That doesn't mean causation. The same behaviors and character flaws of a person will both make them poor and make them commit crime. A man that is unreliable, selfish and violent will be unemployable. He will also be inclined to crime because of those personal traits. What's interesting is the underlying reasons why people turn out to be that way, but people rarely want to have that discussion. They judge the world as they judge themselves, and they know that they would have little qualms about committing violent crime if they were broke.