Heh, that depends on how we define "PC", of course
It's not a phrase I like to use, because it often seems to mean "doubleplusungood in some way that's typical of those who are to the left of me politically". But I'm pretty sure that you'll find people who have railed against at least the three classics I mentioned, and if noone has railed against the newer works, it's probably only because they're not so well known.
I haven't read much Okorafor, just that one and a superhero (or -villain) story in a magazine. "Who Fears Death" was so dark that I had to take a break several times, but still worth it. I've been meaning to read more by her, which one(s) would you recommend?