at its core, democracy is a system that has failed and will fail in society, forever, the idea of democracy is that everybody takes a vote on every little action that goes on, this system will not work for very long for several reasons. One: the system is too indecisive, it takes far too much time to make decisions and it leads to the downfall of the society. Two: democracy is a system which essentially relies upon the idea that all will deal with the majority rule, and that simply is not within human nature. Three: within a democracy, the power is far too scattered, if a society is to succeed, the power in it must be focused into specific rations of checks and balances, it cannot be equally distributed, making any democratic society a powder keg waiting to explode.
A system of government by the whole population or all the eligible members of a state, typically through elected representatives.
Democracy by definition means the government by people. That means that all the people should be able to have their say in one way another in everything that affects their lives. Dictionaries usually say that this right can either be exercised directly (by every member of a community having the possibility to enter personally, without mediators, his position on a particular issue into the decision making process - modern technology is able to provide this possibility for increasingly larger and larger communities), or through representatives (members of legislative bodies). This second arrangement is then called Representative Democracy.
First of all, the United States is not a true democracy, it is a representative republic. In a Democracy, majority or mob rule prevails, so whenever 51% of voters want something, they get it. Eventually, they vote the treasury over to themselves. As this occurs, those that contribute are overcome by those that do not contribute. Eventually, the system fails as it goes bankrupt.