Seems to be a huge difference between coon and king and not simply that he "jumbled a couple of words."
The previous word was "Luther" and the following word was "King". It seems clear to me that it was a simple twist of the tongue, i.e., accidentally putting the two together: "Koong". It's like trying to say "Toy boat" three times fast.
So now we're at the stage in this country where people like BillyBloom judge all conservatives as racist by mere virtue of being conservative and people get fired for pronouncing a word incorrectly. And liberals and Democrats say we're being paranoid.