I disagree vociferously LH! I don't think this is the way human society works AT ALL. Humans, by nature, don't freely form caste systems. Those are imposed on the masses, by people with real evil intentions, and usually using religion as their justification.
But that isn't how human societies organize themselves in the absence of the sorts of rigid hierarchies that dominated the planet during, for instance, the age of Chinese dynastic rule, any more than it was true of all human societies when the era of European colonial expansion and industrial capitalism began to take over.
Thank goodness democracy spreads like wildfire--even more so than religion--giving democracy a foot in the door in places people never dreamed would have it.
No, we just have to figure out a way to beat these bastards back once and for all, if we have any hope of surviving on this planet.