True that ! ,
However, after the first autopsy examinations, all residuals would have been removed for toxicology examination, and wouldnt be avialable for subsequent investigations.
If Micheal Brown fought with me for possession of my handgun and resulted in discharge of the handgun in my car, after already having aready been assualted by the 'perp'
I would already be Pi$$ed enough that I would shoot the perp without thought of legal ramifications.
I don't think pissed really came into it for the officer, I think it was pain, fear, and patterning from his training.
He reacted as he was trained to do and he was justified in doing so.