But even assuming that our nation achieved as much as a 25 percent reduction in crime overall through mass incarceration, it still means that the overwhelming majority of crime—75 percent—persists despite mass incarceration, and despite mass incarceration costing nearly $200 billion annually. As a crime reduction strategy, mass incarceration is an abysmal failure. It is largely ineffective and extraordinarily expensive. Saying mass incarceration is an abysmal failure makes sense, though, only if one assumes that the criminal justice system is designed to prevent and control crime. But if mass
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