And he will absolutely do prison time. His own cops -- who usually refuse to say a single critical word about one another, let alone charge one of their own, wanted nothing to do with him, and neither did his original lawyer after seeing the video.
I can't speak for the sole juror who somehow couldn't be certain that this was murder, but the guy is going to do some time. Agree with your points, otherwise, although I'd say that many cops operate with zero fear of repercussions for how they treat anyone other than the super-wealthy, rather than just the white.