Blacks, which here means non-Hispanic blacks, were 12.5% of the U.S. population, and non-Hispanic whites were 60.4%. It thus appears from this data that the black per capita violent crime rate is roughly 2.3 to 2.8 times the rate for the country as a whole, while the white per capita violent crime rate is roughly 0.7 to 0.9 times the rate for the country as a whole.
Note: keep in mind he's extrapolating a certain part of the U.S, New York, to the rest of America's national crime statistics
I will see if I can find it, but basically, the entire racial connection to crime disappears when you factor class/income into the analysis. Income/wealth is the most powerful and significant predictor of crime, and that income/wealth in America is highly racialized, but it also predicts crime rates among white people, as well.
I'm not sure how I'm accepting the premise? The "racial" connection breaks down because it doesn't explain crime rates among poor whites. When you factor in income inequality, it explains crime rates across races and race ends up not being a statistically significant predictor.
That is a paper that covers it, but there are other ones out there that come to the same conclusion. I think there might be one from the FBI that also comes to that conclusion. It matches up with other research from the World Bank, which has found that the single most powerful predictor of the variance in violent crime rates between US states and between countries is income inequality (even more so than stuff like the number of guns, which has kind of a dubious statistical connection, anyways).