Yes, and yet they are also yet more relatively wealthy compared to someone making $2500/yr, as after a point, the difference between the super rich and the quite comfortable is effectively less than the quite well off and the desperately poor.
Even so, it is relative disparity in wealth, not prevalence of poverty itself, that most drives violent crime.
I don't think so.
Why not? GINI correlates to violent crime at a higher rate than any other variable, as high as 90%.
correlation is not causation.
Reason suggests that in this matter the influence of wealth disparity is causative, due to the nature of intraspecific competition in H. sapiens.