My answer to How is democracy flawed?
Answer by Ken Larson:
There are really no pure democracies. The flaw is that in a populous world, giving the masses total input into every governmental decision, as the pure definition of democracy would requires, is unworkable.
So, derivatives have arisen and they have long and successful histories.
The U.S. is not a democracy; it is a constitutional republic that practices democratic approaches to government.
The checks and balances between the elected representatives of the people (Congress) the Presidency, and the Judiciary insure that the will of the majority of the citizens of the country is carried forward.