True democracies cannot survive. Technically, places like Venezuela and Cuba are democracies.
Once the electorate completely figures out that it can simply vote itself largess from the Government it is doomed to failure, misery, dictatorship and utter collapse.
That is THE core of Socialism. That is what virtually ALL democrats in America espouse today.
But the founders were no idiots. They realized this, and made us a representative republic. The Democrats HATE that we are, and subsequently they HATE our Constitution. They are furiously trying to scrap it in all sorts of ways. Look out for their big push for popular vote for Presidency. If they succeed, then we truly have a tyranny of the majority. And every sort of evil and curtailment of freedom will ensue.
It is a great thing that a handful of population heavy states and large cities cannot dictate to the rest of us their evil desires.