The icky point is when you start looking at crime as a function of not just SES but also culture. A lot of people have a hard time nuancing culture from race even though a well traveled person would easily see the difference.

1) men commit violent crime at much higher rates than women. Why? 2) sexism? stupidity? Or perhaps "being male" (higher testosterone levels) 3) males who self-identify as black have about 15% more testoterone (courtesy of that racist institution, the National Institutes of Health)

http://www.ncbi.nlm.nih.gov/pubmed/3455741

4) is is really so crazy that a population with higher testosterone levels tends to be be bigger, and when they indulgent a violent proclivity, the outcome is more severe than when, say, a japanese women gets upset at the flower shop?