Judah Benjamin served in the Confederate Cabinet throughout the War. The first Jew in the U.S. Cabinet wasn't appointed until 1898. I went to a Catholic H.S. in Queens and heard the epithets "Jew Bastard" and "Nigger" more times than I'd care to remember. If I had to guess, I say there was more rancor for Jews who were envied than for Blacks who were disdained.
Sadly, I have heard many similar stories about the North (PA, NH, and even Mass.). I honestly believe that in the South, we had to rely on each other and help each other after the War. Over the years, we (black and white) have earned respect for each other and learned to embrace our neighbors as brothers.
We don't need outsiders telling us how to get along, we don't need diversity programs! I think most Southerners would say, "we don't care how you did it back home, let us alone!"
I have to laugh at the irony of people that complain about the South and then move down here to raise a family.