The dynamics of racism is different in the South and North. The so-called "Southern Hospitality" is just a matter of dealing with societal problems differently. Remember that Nazi Germany also maintained a kind of superficial "civility" while committing atrocities.

There are parts of the South that eschew any kind of civil decorum. There are parts of the North that are polite and civil. These generalizations shed no light on the rampant racism found in every part of the country.

I have encountered both civility and open blatant racist hostility in both Northern and Southern cities. Yes, Virginia, there is North Hospitality as well.