This thread is for discussing anything that doesn't seem to deserve its own post.
If the resulting discussion becomes impractical to continue here, it means the topic is a promising candidate for its own thread.
For questions of, say, population genetics, I think that is quite right. But for questions of sociology or social policy I don't see why one wouldn't include 'black' as part of the ontology.
This thread is for discussing anything that doesn't seem to deserve its own post.
If the resulting discussion becomes impractical to continue here, it means the topic is a promising candidate for its own thread.