Ever see a black person on that show ?
Go to 9:11....
Funny you should bring that up. I heard this very point made one day while driving somewhere on a radio talk show. I don't remember what show or talking head it was, it was on satellite radio. Specifically the guy said, "no black people in Mayberry? And you're in the South?"
--- which just demonstrates how willing some people are to step in the shit of their own ignorance. "Mayberry" is of course based on Griffith's home town of Mount Airy North Carolina (near the town of Pilot Mountain, made into "Mt. Pilot" for the show). It's not far from where I sit. And that casting was accurate since there ain't no black population in Mount Airy. Just as there ain't no black population here in Appalachia, somewhat west of there. The simple-enough reason is that influx of black population would have come from one of two factors: either (a) slavery was practiced there, or (b) some kind of industrialization attracted workers. Neither of those happened around these parts, ergo very few blacks.
It further demonstrates how this talk show host fuels on stereotypes, in this case "The South", as if "The South" is a single monolith, the same anywhere in "The South", as if the land, and the language, and the history, and the culture, doesn't change as one travels within it. Dood probably thinks "The South" was all in on the Civil War too. These are the wages of stopping short on one's education. And the manifestations of the Cult of Ignorance.