Economics is rationalism. Literally.

And economics has no concern about the well-being of any social group.

If another social group creates more wealth than yours do via immigration, guess what? Your social group dies.

If a bunch of marauding dark-skinned anti-gay Muslims practicing Sharia law creates more wealth than sweet, huggable white libertarians with flowers in their hands, guess who's going to dominate?

There's no faking it in economics. Adapt or die.

And white nationalists are going to learn the hard way that immigrants are what creates wealth in this country, since they work hard and have a lower crime rate than natives.