William C. Heffernan & John Kleinig 
From Social Justice to Criminal Justice [PDF ebook] 
Poverty and the Administration of Criminal Law

The economically deprived come into contact with the criminal court system in disproportionate number. This collection of original, interactive essays, written from a variety of ideological perspectives, explores some of the more troubling questions and ethical dilemmas inherent in this situation. The contributors, including well-known legal and political philosophers Philip Pettit, George Fletcher, and Jeremy Waldron, examine issues such as heightened vulnerability, indigent representation, and rotten social background defenses.