From comments at Thing of Things:
There has been some criticism recently of Michelle Alexander’s The New Jim Crow. See, for example, Vox:
https://www.vox.com/policy-and-politics/2017/5/30/15591700/mass-incarceration-john-pfaff-locked-in
However, Brookings (and Ozy) points out that if you reframe the problem from “mass incarceration” to “mass exposure to prison”, the War on Drugs retakes primary importance: