Statistically they are right, inequality correlates heavily with crime.
https://www.economist.com/graphic-detail/2018/06/07/the-star...
In this case that's just a rationalization for what you want to be true.
Even just applying basic logic to it suggests it is true. You arguing against it is absurd
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)
Read the papers. Apply your logic evenhandedly. Follow the leads and research on your own. It may be scary- you may discover things that force you to change your life (or you may learn something about yourself you dislike).