"Black" and "white"?

Factual Questions
1

Why is it that many black authors capitilize the first letter of the word “black” when using it to refer to their race, but leave “white” uncapitilized? I see this a lot in books written by black people in my local library. It’s to the point that if I pick up a book written by a black author, I expect to see “Black” and “white”. Not all do, of course, but it’s enough for me to notice. Do any white authors capitilize “white” and I just haven’t noticed?

Personally, I don’t capitilize either, though if you insist on capitilization, I think both ought to be capitilized.

2

I’m trying to finish a book with a number of black and white players. After 4-500 pages I noticed I was doing that (I’m white). So I went back and capatilized the Whites. I studied that a bit and decided it looked silly and changed them all to lower case.

As to why. I’m thinking it’s an offshoot of the whole PC thing. Black is not just a descriptor, it has become a title in itself. Black doesn’t mean what it meant in the early '60’s while white just chugs along pretty much like it always has. Of course YMMV.