The point is that if you haven't experienced discrimination (in terms of your ancestors being forced into slavery for the color of their skin or the constant barrage of laws attempted to keep you below others in society because of the color of your skin), you have no place in telling someone else how they should refer to the color of their skin.
This isn't an an issue of semantics that you're trying to make it out to be - it's just not your business in the first place.
This isn't an an issue of semantics that you're trying to make it out to be - it's just not your business in the first place.