Not everyone in jail deserves to be there. Corrupt cops do exist, people get locked up for faulty evidence etc. And jail was built to make it so you almost have to go back after your out, because it's damn hard to get a job after your out. You have to resort to some way to make money. Now that one of the only ways people could better themselves in jail got taken away (getting degrees in jail), it's like a one way road for people who go to jail.