As much as we call what we have a "democracy", we don't live in one; it's an illusion. What we have is a Dictatorship of the Bourgeoisie that ignores the masses.
Sounds like you've lost yourself in your wordplay. Where you draw the line between your "masses" and your "bourgeoise"?
Take China for example. The country became relatively peaceful internally once it became acceptable to merely not oppose the communist party, compared to the "revolutionary times" of the civil war and cultural revolution.
I feel like good research on how and why revolutions arise, communist ones specifically, is lacking. We do not understand their initial conditions. Maybe we must turn to Marxists or communists directly for this understanding.
"The most effective lever for the achievement of this object is the conquest of political power. With its aid the proletariat can consciously carry out the transformation of a Capitalist into a Communist society. To this transformation, there also corresponds a political transition period, the state of which can be nothing else than a revolutionary Dictatorship of the Proletariat." — Marx, Letter to the German Social Democracy, 1875
The Khmer Rouge was that "political transition period" Marx spoke of.
"The Commune itself–the government formed by the workers–was made up of representatives of the various wards of Paris, elected by the citizens and recallable from office at any time. The majority of its members were workers or acknowledged representatives of the working class. Rather than a parliamentary body (such as the Congress in the U.S.), the Commune both made decisions and carried them out." — https://www.marxists.org/history/erol/ncm-5/rcp-paris-commun...
"...to concentrate as much power as possible in the hands of the State. They need not be misled by democratic platitudes about the freedom of the Communes, self-determination, etc.”
He's saying don't be fooled by people picking up our talking points, a revolution in Germany will be hard pressed to prevent the country from fragmenting. Federalization in Germany, a nation just forged from a patchwork of feudal estates, would invite an immediate return of society to a feudal configuration.