I believe they don't. People should not have a problem with me calling myself African-american. if they do then they need to look within themselves to figure out exactly why that bothers them. If I was a "regular American" then the discriminatory treatment I have witnessed and been subject to would not have occurred. I have no problem with people noticing I am Black. I do have a problem with them forming a judgement of me before they know what I am about.
But you are one of the worst racist on the board, so you prove the point that Delta is making! Just saying!