Why the cultural Marxism of political correctness will fade

Am I being too optimistic in thinking that over time truth and reason rise to the top? For example, in the intellectual battles of religion, philosophy and science there has been steady progress in defining real human nature, with occasional barbarian backsliding. Gradually the evolutionary sciences such as sociobiology and evolutionary psychology are rising to the top in defining what human nature is.

A “racist” in Washington, New York, Hollywood and the Media is now synonymous with not being politically correct, that is, not being culturally Marxist---but will they always get away with this slander?

I think social and political philosophy will gradually change as human nature is more accurately defined as being universally kin-centered, gender defined, age-graded, heterosexual marriage-making, hierarchical, ethnocentric, even xenophobic, and religious-making, among other things, with group-selection---people bonding best with their own kind---as the primary unit of selection. Then irrational and anti-human ideologies such as cultural Marxism will fade.

We do have a way to go since, as Jerry Salyer pointed out, at this time Republicans insist in such things as hipsters, Muslims, and tattooed lesbians needing a robust economy, and Democrats insist that hipsters, Muslims, and tattooed lesbians need a long-term supply of clean air and water.

But when social and political programs harmonize more accurately with the real human nature listed above then our gross empires will be seen as the monsters that they are, and ethnic cultures and an ethnopluralism of regions and states will be celebrated and protected, and no longer slandered. I think this will eventually happen, if we can survive in the meantime.