Whats the minimum thing he can be found guilty of because that's what it'll be. And it'll be that because he's actually not guilty, but the majority of the jurors 'feel' that everyone wants him to be convicted and they had to do something and/or are concerned about their own safety.
They have literally tons of evidence that felon dumbshit didn't die from being suffocated. There is no way this would ever even be charged with what it was if this was something that wasn't plastered all over the news 24/7 when it happened, and if muppets like Waters didn't say dumb shit about how you need to react to it.
Unless he gets an activist judge at appeal, I also see this being appealed and won.
As far as rioting, of coarse it'll happen either way. There is a growing demographic that waits for and exploits protests with the sole purpose of turning them into riots so that they can go and get a new pair of Jordans and a widescreen TV. The good news is, either through the lack of logistics or having at least the common sense to know that they will literally get shot, all their bullshit stays in the same liberal shitholes they live in.