Not SES

Lots of evidence which suggests it, none which confirms it, but also none which outright denies it

https://core.ac.uk/download/pdf/6792976.pdf

Table 3,4,6. Noting that homicide is a non-economic crime and most crime is intraracial. Especially since crimes against whites are less intraracial (70% or so being intraracial) so therefore they deflate the black criminality rate by not having a thorough breakdown since more of those crimes against whites will be by blacks than vice-versa)

https://www.bjs.gov/content/pub/pdf/htus8008.pdf
Some data on intraracial homicide

https://ucr.fbi.gov/crime-in-the-u.s/2011/crime-in-the-u.s.-2011/offenses-known-to-law-enforcement/expanded/expanded-homicide-data
And the best guess likelihood of being killed by someone known to you (ie likely to be in the same social class)

https://randomcriticalanalysis.wordpress.com/2015/11/16/racial-differences-in-homicide-rates-are-poorly-explained-by-economics/

WaPo article and study on incarceration
https://link.springer.com/article/10.1007%2Fs12552-016-9164-y

http://www.sciencedirect.com/science/article/pii/S0191886913000470

https://en.wikipedia.org/wiki/Race_and_crime_in_the_United_States#Comparison_of_UCR_and_NCVS_data

http://archive.is/oU82H

Muh Drugs

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2871399/

And West Virginia's poverty and drug issue but still not being near the most violent states.
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http://www.economist.com/news/science-and-technology/21613303-disturbing-study-link-between-incomes-and-criminal-behaviour-have-and

http://www.pnas.org/content/early/2017/06/13/1620603114.abstract
http://www.pnas.org/content/early/2017/06/13/1620603114.abstract

https://randomcriticalanalysis.wordpress.com/2017/06/22/no-us-school-funding-is-actually-somewhat-progressive/

http://quillette.com/2015/12/01/why-parenting-may-not-matter-and-why-most-social-science-research-is-probably-wrong/

Jayman tiger mom stuff

https://www.researchgate.net/publication/233737219_Indicators_of_domesticintimate_partner_violence_are_structured_by_genetic_and_nonshared_environmental_influences

https://notpoliticallycorrect.me/2017/06/18/why-testosterone-does-not-cause-crime/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4886836/

http://thealternativehypothesis.org/index.php/2016/04/15/school-quality-as-a-cause-of-racial-iq-gaps/