This major new volume of papers by leading criminologists, sociologists and historians, sets out what is known about the political and penological causes of the phenomenon of mass imprisonment. Mass imprisonment, American-style, involves the penal segregation of large numbers of the poor and minorities. Imprisonment has become a central institution for the social control of the urban poor. Other countries are now looking to the USA to see what should be learned from this massive and controversial social experiment. This book describes mass imprisonment′s impact upon crime, upon the minority communities most affected, upon social policy and, more broadly upon national culture. This is a book that all penologists and poli