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There is an issue with democracies that I touched upon a few times:
/2017/10/overlapping-territorial-sovereignty.html
/2017/06/middle-east-and-democracy.html
The peaceful transition of power after a change of majority in an election (or even only after different parties forming a different coalition) is at the core of any democracy. The existence of permanent majorities and permanent minorities turns this feature moot.
A minority that's so very separated from the majority that it can never form a coalition with parts of a present majority in order to become part of a future majority has little reason to consider democracy's majority rule concept anything but permanent oppression.
This happens a lot in areas with strong tribal or sectarian divisions such as Africa or the Mid East.
The most elegant solution is to achieve assimilation by the majority, but there are some tribes that maintained their separation for thousands of years (Samaritans, for example), and other minorities are so visibly different from the majority (Chinese-origin mountain people in Thailand, Whites in South Africa et cetera) that there's little hope of present minority and present majority feeling as one anytime soon short of extraterrestrials landing on earth with hostile intent.
The Western countries typically have ideological divisions rather than religious or ethnic ones, so I was very surprised to find an example of such a permanent minority problem undermining the perception of democracy's legitimacy in a (supposedly) Western country:
My first reaction was to think of those wannabe separatists as immature crybabies who should learn that as an adult you can't always have your way. Then I realized that they believe that others will always have their way over them.
There's no doubt that the rural people there would be just fine permanently dominating the urban people, as can be observed in more rural American states without the cityfolk turning into separatist crybabies, but this doesn't change that this is a very, very dangerous undermining of democracy's legitimacy.
A deviation from plain majority vote towards a constitution with proportional governance (some offices reserved for rural people, de facto veto powers for both factions) might help, but this is a different case from religious or ethnic separations. Religious divisions in a proportional governance would arrive at a minimum consensus on religion-affected topics and ethnic divisions would arrive at a proportional allocation of resources or no gifts to either group as policy. The rural/urban divide in the U.S. is rather a divide between people who live in fear&hate fantasyland and social democrats. Almost nothing can get done if both had veto powers over the other all the time. Government would be paralyzed, on autopilot, completely incapable of rising to any challenge.