The diff is they arent as supervised and the innocent people that are in there for things such as depression or bipolar schizos whatever arent protected from serial rapists that are put in there believe me i know cause i had a serial rapist break into my room with a knife in the middle of the night while i was there.There was supposed to be security in the corridor outside my room.I know it happens in jail too but it just aint that easy to break into another persons cell.Anyways i met rapists and murderers in there and believe me they should be in prison getting done to them what they do to others.