As in, if you're black and someone brings it up in conversation, do you correct them and say "No, I'm African-XXX" and such or prefer they did?
I have noticed some people take a lot offense to this and honestly off all the 'color' words, I feel "yellow" is really the only one which has the most negative connotations behind it. Of course this might just be where I live and some of my relatives still use the word 'colored' so maybe I'm just desensitized to the word 'black.'
Honestly, I don't find them offensive, but I'm a white person and as we cause the majority of the world's problems, we can be kind of ignorant. But sexy.