Quotes from the news wire:
Even good defamation cases are hard to win in court, because of the discovery involved and proving actual damages. But this case, I think, is going to be extraordinarily difficult, the defense will be that this is simply an expression of opinion by the President, which he's allowed to express, and that is considered non-defamatory under defamation law.
I believe that the existence of cell phone video and social media postings has substantially reduced police brutality over the long run. Although the intensity of news coverage of cases such as [George] Zimmerman and Michael Brown makes it feel like there is more police brutality, my sense of the situation as a lawyer who is in court several times a week is that the number of cases is diminishing.
If he winds up with 60 or 75 years in jail, from a pragmatic standpoint it doesn't make a whole lot of sense to retry the case, on the other hand if you're the parents of Jordan Davis and you believe, as well you should, that your son's reputation has been besmirched by this self-defense claim, the family (might) want a retrial, and that's something that a prosecutor has to consider carefully.