I'm from Nashville. Downtown Nashville is pretty racially mixed and pretty liberal. You'll see a lot of niggers, and it's not that unusual to see fags walking around holding hands, that sort of thing. It's not really that it's totally accepted, it's kind of more...tolerated.
But once you get outside the city, you'll find the kind of communities you're probably thinking about, OP. I've moved to southwestern Utah now, but I spent most of my adult life in Hendersonville TN, which is maybe a 20-30 minute drive from downtown Nashville depending on traffic.
It's about 98% white. The secret is multi-fold. First of all, the cost of buying a house or renting an apartment there is pretty high.
But probably more importantly, our cops, judges, and other important local political figures are all racists.
If a nigger does come poking around town, he's gonna get pulled over. They'll find a reason. He's gonna get the full treatment - "Step out of the car," drug dogs, the whole nine yards. And most likely, they're going to find something to charge him with, and haul him off to jail.
If he's actually done nothing wrong, he'll probably get cut loose in a couple days. But he won't be back to Hendersonville again.
If he did do something wrong, he gets the book thrown at him, goes to jail for a while, and then never comes back to Hendersonville again.
Either way, he's going to get the picture - NOT WELCOME.
Fact is, up until the early 1980's, there was a sign posted to a tree that was pretty hard to miss as you drove through town - "Nigger, don't let the sun set on your black ass around here."
That sign's been taken down, but the sentiment remains the same.
So to answer your question more succinctly, OP, yes, they do keep the nigger problem down there under control. Not everywhere, but if you look around you'll find what you're looking for.
Alternate Plan: Come on out to Utah. I haven't seen a nigger here in over a month.