You don't get
abrasions post-mortem, however, and if it were post-mortem bruising, you'd expect it in parts of his body that were lower than others. Having bruises and abrasions on his front, back, sides and face is not a natural thing that happens after death. It's a thing that happens when you're roughed up - if you read the autopsy report there are a variety of injuries that you'd have to try pretty hard to inflict on yourself, but are absolutely consistent with being beaten and thrown to the ground, and then having someone dead-drop knee-first into your back.
Honestly, I understand him killing himself. In the same scenario, potentially facing 15-25 years in prison for a felony (being white would likely help keep him out of jail, but being a geek with aspergers would not), I would likely do the same, as in the US there is no life after prison.
This is interesting, actually - unsurprisingly, the US is the most punitive place on earth if you assault a cop, although I can't see how you could assault a cop in the US, given that they're armed to the teeth and usually in full armour, and usually sat in an armoured and armed vehicle.
http://www.hopesandfears.com/hopes/city/city_index/215849-ci...