I can say without a doubt I have never seen a black person in the PRC in 6 years of spending 20% of each year there.
No kidding? I was there for a couple years and I'd say that about 5% of the foreigners I met were African. I even worked with a Kenyan the last 6 months I was there. This is southern China though - YMMV
True that. They rank the races yellow, white, black.
I think that's situational - re: Chinese vs white. I know that I was both discriminated for, and against because I'm Caucasian. "fei ren" are definitely on the bottom of the ladder though, along with Indians (dot) as both tend to have very dark skin. This is a wide ranging generalization though - as is everywhere, every individual is different.
As to the OT, well I can see the problem just "disappearing" just as easily as I can see "time to make an example". In general when it comes to crimes against individuals, it seems like the Chinese justice system acts a lot like an arbitrator. Granted my personal sample size is small, but from a cultural aspect, it seems to coincide - just settle things with as little fuss as possible. As long as you haven't embarrassed the Party.
For instance, once upon a time, after applying for and receiving a residence permit after being in China a week, we were called back in to "confess and apologize" for not registering within the 3 days mandated. Well, we'd visited family many, many times beforehand, and never bothered, nor for that matter even knowing of the regulation. So when applying we were told that it was 3 days, but here's your permits. However, once the story had gone up the chain in that particular bureau someone decided that we needed to be chastised. So we went back in, signed our written apologies and promised never, ever to do it again...
Fast forward a year or so later, after having traveling back and forth to the US a couple times. I was told by a bank official that even though there is no expiration date on the residence permit, since we had left the country, we had to reapply. This still had to be done, though none of the details of our residence had changed. So off I went to the police station, documents (literally) and hat (figuratively) in hand. I apologized up front,and received new, though identical residence permits. Zero repercussions, no need even for another formal written confession/apology... At that point, it had been MONTHS since we'd returned from overseas. For the second time...
So, what I'm saying is not to expect any consistency from the Chinese justice system. In fact, in view of the Chinese love of all things basketball, I'd expect apologies, reimbursement, and a speedy exit from China to be the eventual outcome.