“…As Clear and Frost noted in 2014, "the Punishment Imperative, dominant for more than a generation, has now run its course" (p. 159). Now, I have a large shelf of prominent books-from authors in criminology, sociology, political science, history, and public policy-all telling why mass imprisonment gripped the United States (see, e.g., Garland, 2001;Gottschalk, 2006;Hinton, 2016;Kohler-Hausmann, 2017;Pratt, 2009;Simon, 2007;Tonry, 2004). By contrast, books explaining the end of mass incarceration are virtually nonexistent (see, however, Aviram, 2015;Clear & Frost, 2014;Simon, 2014).…”