The parent of your comment is not confused about the difference between people who are Black and the color black. They are referring to the inconsistency in the media wherein stories that discuss race will typically have uppercase "B" in "Black", yet lowercase "w" in "white", where they both refer to a specific group of people. One could argue that, for the sake of consistency, they should both be capitalized or not, yet it is indeed unusual to see capitalized "White" in the media, as in, "The White community" or "A White teenager". It is more common to see "The white community" or "A white teenager". However, it's perfectly normal to see "The Black community" or "A Black teenager". And that's aside from how often each group is mentioned in the media.