Just trying to illustrate absurdity with absurdity. I never hear the kind of ethnic slurs you mention. Haven't in years. But all you have to do is to go North with your imaginary Jewish business partner or your make-believe half-Black half-Navaho childhood friend and people come out of the woodwork to insult the two of you or whisper behind his back. After the bit about yachts against subs and the Galveston u-boat, and all the imaginary books and professors you cite, you ought to be more careful, assuming you're not completely insane.
fwiw, my childhood chum is 1/2 Black & 1/2 Apache, rather than Navajo. i think you KNOW that.
racists, fools & bigots still thrive in northeastern society, once they THINK nobody "who might be offended" aren't listening. i also think you are SMART ENOUGH to know that the RACISTS & ANTI-Semites are still prevalent, though you & i WISH they had all magically disappeared.
free dixie,sw