These people shouldn't be serving time for this.
The guard unit headquartered in my hometown was transferred into Abu Ghraib a few days before the story broke. They were attacked by mortars almost every day from the time the reports appeared in the media until the time they left Iraq. According to the soldiers I've spoken with, a lot of these mortar rounds landed among the prisoner population, because they had a lot of the non-terrorist offenders housed in tents in various courtyards within the prison complex.
These people put our troops in danger from combat that wouldn't have happened otherwise and got Iraqis killed and wounded because they wanted to indulge their playground bully urges and/or get their rocks off. They deserve prison, in fact, they deserve lots of prison. So have a nice cup of shut the hell up, because you have no idea in the world what their stupidity, malice and perversion have cost us.