To hear liberals tell it, The South INVENTED racism, bigotry and prejudice. There were none of these in the north of the Mason-Dixon Line.................
"Irish racism in Victorian Britain and 19th century United States included the stereotyping of the Irish as alcoholics, and implications that they monopolised certain (usually low-paying) job markets.[citation needed] They were often called "white Negroes." Throughout Britain and the US, newspaper illustrations and hand drawings depicted a prehistoric "ape-like image" of Irish faces to bolster evolutionary racist claims that the Irish people were an "inferior race" as compared to Anglo-Saxons"
https://en.wikipedia.org/wiki/Anti-Irish_sentiment
Polacks, Kikes, Spics, Dagos, Rednecks, Crackers are all ethnic epithets that are far more prevalent in the North than the South.