Logical, dispassionate, pragmatic types (albiet ones with a romantic steak) tend to get drawn to causes like European preservationism.
By contrast, the entire notion of mainstream multiculturalism is predicated on a series of nice-sounding but ultimately hollow platitudes, and fairytale notions regarding the way the world "should"--but can never--be. Empirically-minded people tend to find ideologies like the aforementioned absurd and illogical, whereas someone who's more emotionally-driven might instead identify with those same thought processes.
Now, this isn't a dig at you: people who operate mostly on emotion are still around for a reason; evolutionarily, they're a welcome part of the tribe. I'm just trying to discover what the obvious disconnect here is, that's all.
People were simply trying to correct your misconceptions regarding the nature of life and race relations in the Old South--again, using cold hard facts to do so.
Ultimately, this is all about your children, and your children's children, and so on. What fate awaits them in a majority-minority America? Hells, what fate awaits them in contemporary America, facing institutional discrimination in the form of Affirmative Action, racial quotas and minority-only scholarships, learning that their heritage is just one endless story of the perpetration of shameless evil on defenseless darkies, and being forced to live amongst Negroes and other assorted creatures that are exponentially more likely to rape, rob, and/or assault them?