Yup agree with bengo, Iraq never had an end of game plan, they simply sacked the whole of the police force en mass, the good, the bad and the indifferent, leaving a huge vacuum while the combat troops were suddenly thrust into a peacetime roll which they were ill equipped to carry out resulting in wide spread looting, rape and murder.
Loathed as the police were, they were the ideal force to continue policing the populace while weeding out the Saddam cronies.
All the average Iraqi wanted was a quiet life and the likes of Saddam wouldn't tend to feature in it, but when you wake up to no power, water, food, sewage flowing down the street, murders, rapes and thefts, then you look for someone to blame and remember when things were better, hence the western forces became the target and that anarchy was fueled by every other lowlife that had a beef with the USA, UK or any other western country.