The stuff about Appalachian Americans as an ethnic group is pretty interesting. That never really occurred to me, but it makes a lot of sense.
Other than using it to describe the region as having a separate and distinct culture in some respects from other regions, I think it is just so much nonsense. And in that case it makes far more sense to simply call it a cultural distinction. I already pointed out the major ethnic groups who inhabit the region. Are Christians in the US an ethnic group? Are midwesterners? Left Coasters? Manhattanites?
Some people try to label them as an ethnic group to try to make a silly case they are being oppressed by others as a group. If you have ever lived there it is simply not true. It is much like anyplace else in the US with some class distinctions based on affluence and lifestyle.
I frequently find it hilarious what misconceptions those from other countries develop about the US, apparently from watching too much TV and no actual experience even visiting here. They seem to be the real victims of propaganda campaigns so commonly used these days because they lack the basis to be able to distinguish them from the facts.
Not to defend the commission members, but just because the slur doesn't describe everyone it's used against doesn't mean it's not a slur like that. If somebody calls a brash and ignorant white person the n-word, it's still offensive to black people because it's associating negative traits with blackness. If somebody calls a wealthy dimwitted bigot a redneck, it's offensive to poor people because it's associating those traits with poverty. The word doesn't lose its connotations just because it's being applied differently.
Obviously, it's not on the same level, but it's still kind of a crappy thing to say.
I completely agree it is a slur. But in no way does it "degrade, oppress and dehumanise".
If someone else is offended by any use of that word other than by themselves, I'd say that is their problem for being overly sensitive. There is only one word in the English language which has legitimately been stricken from white vocabularies but not from blacks by political correctness.
This particular slang is now ironically commonly used in the South to describe those who quite frequently used of the now-banned word in the past, but now only use it when privately talking to their own friends with similar attitudes for the most part.
In this particular case, this black gentleman was referring to the treatment he received by the county commission because he was not white. The county itself wouldn't have even had to pay the expenses. It would have come out of the state budget. Yet they still refused to approve it. If he had muttered this word while exiting and I was sitting in the audience, I probably would have nodded to him. And I would have laughed at the apparent negative reaction from others.
The elimination of inherent racism in the South has come a very long way since my childhood. But it still has a very long way to go. Labeling people as racists and bigots when they discriminate against blacks helps this process along.