It is no coincidence that no popular media depicts anyone with a Southern accent as anything other than a despicable degenerate. For twerps in NYC who rail against stereotypes, this is their only picture of the Southern Man.
In the same manner the Nazis launched a campaign of mockery and ridicule at the Polish people who gave them so much trouble in pacifying Poland, so too do the Northeastern "elites" who control Washington DC still to this day mock people who once opposed their draconian control of our government.
It is ongoing and constant propaganda, and it has worked for them for the last 150 years.