> On the whole people commit crime because they are desperate (for money, for drugs, etc.),

I suspect that often what happens for the most disadvantaged people is that the arrow of causality gets reversed - the deck gets so stacked against them that it's almost a crime to simply exist at all. And that, in turn, puts them into a desperate situation.

There was an interesting piece of investigative journalism in the Milwaukee Journal-Sentinel that I read maybe 10 or 15 years ago showing how policies set up by (then County commissioner) Scott Walker more-or-less made it implicitly illegal to live below the poverty line in a majority Black neighborhood in Milwaukee County. Not through any one law, but through a series of edge cases related to the interaction of laws and urban planning initiatives that were almost impossible for anyone without significant resources to navigate successfully.