There has always been an ideology, always believable but never supported, that justifies the few damaging the many or their society as a whole for their own ben

There has always been an ideology, always believable but never supported, that justifies the few damaging the many or their society as a whole for their own benefit. You enumerated one that matches today's world view. Previous eras would justify it with some eugenics hand waving and before that would be an invocation of divine will. And just as they did, todays adherents will say that past justifications were nonsense but today's are correct. But the result is the same; general harm done for the benefit of a few and nice story of facile ideology that justifies it.