"In the South, there's just more folks who need killing."

[Spexxvet]

It's not reaction to conflict in a hallway:

Culture of Honor makes a compelling case that there is something about Southernness itself that accounts for the link between region and violence. The case begins with a review and reanalysis of the extensive research on region and homicide. University of Michigan psychologist Richard E. Nisbett and University of Illinois psychologist Dov Cohen find many common explanations for the South's higher homicide rate wanting. The legacy of slavery is probably an inadequate explanation because the non-slave regions of the South show the highest homicide rates; temperature fails as an explanation because the cooler upland regions have higher homicide rates. Relative poverty rates cannot be ruled out as a causal factor, but the regional effect remains even when poverty is taken into account.