Seth Ackerman on his blog:
What to make of that surprising fact? I have no problem believing that the New Jersey and Connecticut justice systems are racist. What I find hard to believe is that those in Alabama and Mississippi are far less racist.
So after looking at the French numbers, I decided to do a little statistical analysis. I found that the degree of racial disparity in U.S. states' incarceration rates is almost entirely a function of how low the white rate is. It's completely unrelated to how high the black rate is. (R-squared is 54% for the white rate, 5% for the black rate.)
Racial disparity in overall incarceration, it seems, is a pretty useless way to measure the bias of a criminal justice system. What seems to be the case, rather, is that the more punitive a justice system gets, the more the experience of incarceration starts to affect people outside the very lowest ranks of society.
The result is a paradox: the higher a state's overall incarceration rate, the smaller the racial disparity.
Read the rest here.