The Washington Post has adopted a non-biased approach to capitalizing
the racial color adjectives, "black" and "white".
Some organizations capitalize "black" and not "white". That
expresses racial bias, and I disapprove of it.
Imagine if prejudice were centered on hair color, rather than skin
color. People would argue that the adjective "blond" is an identity
and demand to capitalize it.
I prefer not to capitalize either of them, because I would rather not
promote the implicit assumption that skin color is a difference in
kind rather than a detail. However, if it becomes common to
capitalize them both, I will go along with it. It isn't
worth fighting about this sort of adjective capitalism.