The South has no monopoly on racism. Even "liberal" California has it's own history of overt racism. For example there's a town here in San Diego County, Santee named (I believe) after a town in South Carolina. It was a "Sundowner" town for many years (that is, if you were a person of color, you better be out of town by sundown) and even today many locals still refer to it as "Klantee."
It's not the only place I know of in this state with a similar history either.
EDIT: Hell, I almost forgot:this very town, Lemon Grove, was the site of the first school desegregation court case in the country.