The people will only ever revolt if people are allowed to have other sides, look at red China, they're basically a whole country of automaton bug people. You can indoctrinate and breed humans to do anything you want, just like with any critter.
If the Nazis won, and by 1980 every human in Europe shared their ideology and have been selectively bred for obedience, who's to say they AREN'T the legitimate ruler? We of course would disagree with that claim, but that doesn't matter when you're a drop in the ocean.
"Might makes Right" is an objective truth, but it's also an inconsiderate and destructive truth that has alternative solutions.
The ultimate weakness of might makes right is that it opens you up to the same process being done on yourselves, and you might not always be the bigger fish.