Ha, they're creating an explanatory model for why income inequality drives crimes.

That was literally the first article that came up on Google, and you clearly did not read it or go through its references, so here is the second article that came up: https://journals.sagepub.com/doi/abs/10.1177/073401689301800...

There is a huge wealth of research on this topic, even if you want to reject it. Do you need a third, fourth, hundredth paper? Try reading past the abstract (and comprehending it)