This does dodge the opinion stuff, but the problem is getting to defamation/damages from that. You'd have to convince both a jury and a judge that being seen as killing black people is harmful to a reputation in a way that killing white people isn't, and put a monetary amount on that. On top of that, it might fall under an honest mistake exception.
No, we really don't. The first amendment is vitally important, and allowing people to sue others into oblivion over things like this will be used by the powerful to bankrupt the less powerful. A classic example of freedom not being free.
Nope. That sadly did not happen. That's from this fake news site:
His lawyers are nowhere near satisfied.
patriotpartypress.com
It calls itself satire in the about us part, but there's no joke.