Can we protect ourselves from Bernie Sanders and the other fools and demagogues of these presidential debates?

Watching the dumb-ass democratic presidential debate last night, with the promise of another dumb-ass debate tonight, I thought of how our country is now too big for democracy to work. What would Socrates, Plato and Aristotle, who criticized democracy as being corrupt and basically inefficient, think of this crop of fools and demagogues?  

Bernie Sanders, one of the last breed of angry Marxist/Socialists born in Brooklyn, New York City, leads this crop of fools and demagogues. Sanders is full of high resentment against capitalist elites, and wants to replace them with Marxist/Socialist elites like himself, even though Lenin and Stalin killed more people than Hitler, after trying to do what Bernie wants to do supposedly with less violence in the U.S. And the Soviets lasted only 69 years!...Joe Biden believes the same things as Bernie but is just more inept or gutless at describing them.

We are now too big, too populated, too diverse, to create one orderly or harmonious democratic society. Human nature is primarily kin and ethnic centered, no matter what modern liberalism preaches. It is not difficult to predict that such diversity will break apart into workable societies of related groups that are able to bond together because they are related and share the same general genetic pool and same culture, that is what evolution often does. We see it now in the ethnic neighborhoods that developed in spite of years of propaganda of the Marxist/Socialist variety insisting that we are all the same.

So the solution to the radically destructive civil disruptions, or even civil wars which are now increasing across the world within unworkable multicultural, multi-ethnic societies, is to gradually and legally form an ethnopluralism of ethnostates as the best possible political configuration for humans beings to live within, given real human nature---that is also the only way real democracy can work. An ethnopluralism of ethnostates or regions could be established in the United States with our constitutional separation of powers and states, protected from marauding Marxist/Socialists like Bernie Sanders and the other fools and demagogues of these presidential debates.