Four and a half million Americans are on probation or parole — more than twice the nation's jail population. Parolees and probationers are required to check in regularly with officials, who are charged with helping them rebuild their lives.
Sister Helen Prejean is best known for her 1993 memoir, Dead Man Walking, about her role as a spiritual adviser to a convicted killer on death row. The story was adapted into an Oscar-winning film starring Susan Sarandon and Sean Penn. Prejean has accompanied six prisoners to their executions and has been at the forefront of activism against the death penalty.