So technically Lee is not incorrect, although I'm sure he wasn't talking about investing power in the citizenry and protecting ALL citizen's legal rights when he said what he said. In fact, he was talking about is quite the opposite. People of his ilk have always bleated about our being a democracy and 'majority rule', until they realized that white, privileged males were no longer the majority of the voting public.
Well indeed, Across. Your example is of majority rule and the majority deciding to seriously impact the basic rights of the minority. So was about protecting from a (viscious) majority.
It was clear that Lee was talking about rule by a minority – which he sees as being the end product of democracy. Erm, well, he's in the party which came to power on a minority of the vote, so in this case the US form of democracy has put a dangerous minority ie HIM in power.
... Not sure that's really where he meant to direct our attention...