you'll have to excuse highland. he, like many others, don't like being confronted with the unassailable fact that racism very much exists to this day, and is very, very concentrated in the deep south, and certainly on the radio. it's just true and plainly observable by anyone that cares to acknowledge it. The problem is that pointing out this plain truth is not an indictment on any one person (like highland), for whatever reason they choose to live where they live.
An inarguable fact of observational reality is simply what it is--a non-judgmental statement of truth. I know the south and the south for which he seems to think racism doesn't exist, and I don't think highland is correct...HOWEVER! as a fellow southerner I very much understand his initial response to defend "that which is ours" and only "we can properly understand!" You can't help it. I do it all the time.
I personally don't like such blanket claims about "all the south," but in many ways, it is also quite fair when you start considering the honest perspectives of people from outside the south--and those from within that aren't afraid to acknowledge it. There is a tendency among those in the south that don't really "get how anything works," to look at the world today, see that lynching doesn't really happen anymore, and tell themselves that there is no more racism. The end. It's all fixed! Obviously this is silly, but it defines how a lot of prideful southerners explain away their bias.
A lot of people think this way...despite how they actually speak with, joke with their friends, treat people in public, hold strong, life-long mental biases about groups of people that, quite unconsciously, determines their interactions with people. It's a hard nut to crack.
crazy nutbar religious AM stations can be found jsut about anywhere, however. Maybe "more" in teh south because more of it is rural but not as remote--say, as rural as a lot of the midwest and southwest and upper midwest are, while they have the same insanity on the radio, they are too remote to support the same amount of radio stations that you see in the south.