"Hardened" was the first term that jumped to mind, though the more I thought about this, and after reading the police report, the more I understand the police's motives and generally agree with their response (it might be they were too harsh physically, but they had good reason to be physical, and the guy fully deserved to be arrested).
While I feel bad for the guy for getting himself into trouble, we had a situation where a guy called 911, the first responders showed up, and the guy had such a sense of entitlement that he acted like he was still in charge of the situation, and because of that misbehaved in a few serious ways. Probably the fact that he was drunk played into his foolishness, but by his own account and the account of the police report, the cops had a drunk guy and his friend interfering with the first responders' work, the police asked them to step back, they were belligerent to the police about it and refused to step back, when the police tried to move him he resisted physically, so the cop put a lock on him, cuffed him, and arrested him. When a drunk is interfering with first responders, disobeying lawful orders, and physically resisting efforts to move out of the scene what else are they going to do? They ordered him to leave, he was belligerent, they pulled him away, he resisted, so they pinned him, cuffed him, and off to jail he went. Maybe they were too forceful, but all we have are the memories of the angry drunk guy prone to fits of screaming by his own account - no medical records or corroboration, and the cops actually made sure there was surveillance of the incident preserved.
They treated him pretty harshly in the jail, but by his own account he was screaming and acting out. It's not a real shocker that the drunk screaming guy misbehaving in jail is going to suffer for it.
There are legitimate cases of serious police abuses. This is more a case of a drunk fool getting himself in trouble by acting like an entitled clown and not complying with the officers' requests to give the first responders space to work.
Even with his annotations, the police report shows what was missing from the story:
https://dl.dropboxusercontent.com/u/779439/police_report_ann...