This would be laughable if these people weren't deadly serious. He wants to restore the original "Euro-white culture" which made America great? Which culture is that? The one that brought slaves over from Africa? The one that slaughtered the indiginous population of this country, pushing them to the brink of extinction? The one that treated their own women as second-class citizens, denying them the rights to vote or even own property? The ultimate irony of this nation's founders is that they fled Europe to escape religious oppression, only to institute their own here.
What is amusing is seeing these extremists, who have always tried to downplay the problems of minorities by insisting that minorities aren't treated badly, in such a panic at the prospect of becoming a minority themselves.
And if this clown thinks racial intermarrying is such a bad thing, I should invite him to a family get-together. 4 races (Black, White, Asian, and Native American). He'd probably spontaneously combust.
And far from extinguishing anyone's culture, this blending has instead brought enlightenment and understanding (for those open to it). Could such a thing, happening on a large scale, result in the loss of some elements of individual cultures? Yes. But such is the nature of life. Cultures evolve. Else we'd all still be huddled in caves and communicating in monosyllabic grunts. His own Euro-white culture of the founding fathers has evolved. They no longer embrace slavery. They permit women to vote. They've stopped using leeches for medicinal purposes, and stopped burning "witches".
Cultures don't become "extinct" simply because they are in the minority. That's a load of crap. I think what this guy really fears is not the loss of personal culture, but the loss of political power. If one race is no longer dominant, they won't be able to assume positions of importance merely by appealing just to their own. This country will instead be run by those who can meet the needs of all kinds of Americans across all ethnic lines. What kind of person would fear that?