Great reports for background:
Related subjects;
Even for the broadest concepts of Criminal Justice, there are several different Library of Congress Subject Headings to consider. (by John Henderson)
Search for: "mass incarceration"
Search for "mass incarceration"
Search HRW for "criminal justice"
see: ACLU "Criminal Reform" issue page
New York State
Academic
Criminology & Public Policy; Aug 2011; V. 10(3) IC Campus: Access with Netpass. Abstract only; use Interlibrary Loan to borrow fulltext.