I think he was downvoted because some people can't see further than his Michael Brown analogy.
The DoJ report was specific and full of examples. Brown was in the wrong (hand up was a media creation), but the Police were systematically oppressive (the tickets for the monetary example). I have several issues with the current DoJ, but the investigation and documentation looks pretty well done. They prove there is a real, systematic local problem, but the focus of the investigation is not an example of it.
This case was about justice, not advancing causes.
If they were downvoted for that reason (rather than the more likely, but also inappropriate, reasons also offered in other comments of either the post author's identity or people not reacting to the Michael Brown reference) then people seriously need to read.
He didn't say he still wishes KP was found guilty, he said he wanted that coming into it, but even with that initial desire couldn't see a basis for finding anything worse than negligence. E.g., he said even coming into the case biased against KP, he couldn't view the evidence as strongly supporting wrongdoing.