I was a very naive young boy and remember reciting the children's choosing rhyme, "Eeny, meeny, minie, mo, catch [an n-word] by the toe..." and my mother slapped me across the face and told me never to use "that word" again.
I innocently inquired which word, "Eeny", "meeny", "minie" or "mo".
I agree, and maybe this is a way for people to get back to a more mannered time. Sort of a reverse PC act. You can not dictate morals or etiquette, but what you can do is say "we" will recognise this as an offensive word and "choose" not to use it.
My only problem though is liberals try to do this same thing with other "words," which they deem offensive. PC is a direct avenue to the abridgement of free speech. You have to tread very lightly with this issue.