Theorizing mode on....
Sometimes we forget that the US is big enough to have its own cultures in various parts of the country. I tend to think of us as one country, and therefore as one cohesive culture, but in fact that's not necessarily true.
When I moved from the pacific NW into Texas, I definitely crossed some cultural lines. Those I know who moved from the Northeast into Texas noticed even more differences. From reports, the deep South is very different even from the Texas area. California is a different kind of place from many other parts of the US. Garrison Keillor makes a good living playing with the cultural stereotypes of the upper midwest.
So it doesn't surprise me that the South has some cultural aspects which are in great contrast to other parts of the US. I heard a recent report on NPR in which the reporter described an area in Alabama as "the kind of place where people ask your name, followed by 'which church do you belong to?'" It struck me that such a question would be extremely rude in many parts of the US, but it reflects a culture and value system which are very different from those I live in.
That may be one reason that we have so much dissent about major issues - it's almost like getting a number of different countries to agree on anything.
Theorizing mode off...return to beer.