At no time in history have prisons been filled so quickly and to such capacity than in the United States, and nowhere has this growth been more concentrated than in the disadvantaged-and primarily minority-neighborhoods of America's largest urban cities. In the first detailed empirical exploration of the effects of mass incarceration on poor communities, Todd Clear calls for a rethinking of the current strategies and policies of criminal justice, concluding with a series of recommendations about how to overcome the problem of mass incarceration concentrated in poor places.