“The growth that characterized mass incarceration’s rise has fractured into four dynamics that vary from state to state and county to county. Contemporary decarceration exists alongside continuous growth, stagnation, and jurisdictional shifts between prisons and jails, akin to a shell game. This report provides a first-in-kind look at the state of incarceration by moving beyond the convention of using state prison populations, illuminating both where meaningful change has happened and where true reform has remained elusive.”