I know that everyone has commented on this already, but it seems that people still don't understand it.
The recent New Yorker cover:
The Daily Show made the point pretty well, but still I hear people (read:Newscasters) saying that they think it is offensive...
Look at it like this: If we took all of the descriptions of Barack Obama and his wife Michelle that every commentator on CNN, MSNBC, Fox News, and the such, have said in the past, and given those descriptions to a sketch artist, who has no clue who these people are, this would be the result. The Media has made this image of the Obamas, and now, THEY think it's offensive.