There are two reasons for this: - Other ethnicities tend to be capitalized, and Black people often don't actually have black skin, so the word is more of a des

There are two reasons for this: - Other ethnicities tend to be capitalized, and Black people often don't actually have black skin, so the word is more of a description of a cultural identity than a color adjective - The use of capitalization in the word "white" has for ~a century been coopted by white supremacist organizations (of the openly racist, cross-burning, murdering people for looking at their daughters funny variety) as their own dogwhistle.