Ian...I believe you still did not pass the 4th grade civics class, my friend...we do not live in a "representative Democracy"...sigh...
The chief characteristic and distinguishing feature of a Democracy is: Rule by Omnipotent Majority. In a Democracy, The Individual, and any group of Individuals composing any Minority, have no protection against the unlimited power of The Majority. It is a case of Majority-over-Man.
This is true whether it be a Direct Democracy, or a Representative Democracy. In the direct type, applicable only to a small number of people as in the little city-states of ancient Greece, or in a New England town-meeting, all of the electorate assemble to debate and decide all government questions, and all decisions are reached by a majority vote (of at least half-plus-one). Decisions of The Majority in a New England town-meeting are, of course, subject to the Constitutions of the State and of the United States which protect The Individual’s rights; so, in this case, The Majority is not omnipotent and such a town-meeting is, therefore, not an example of a true Direct Democracy. Under a Representative Democracy like Britain’s parliamentary form of government, the people elect representatives to the national legislature--the elective body there being the House of Commons--and it functions by a similar vote of at least half-plus-one in making all legislative decisions.
In both the Direct type and the Representative type of Democracy, The Majority’s power is absolute and unlimited; its decisions are unappealable under the legal system established to give effect to this form of government. This opens the door to unlimited Tyranny-by-Majority. This was what The Framers of the United States Constitution meant in 1787, in debates in the Federal (framing) Convention, when they condemned the "excesses of democracy" and abuses under any Democracy of the unalienable rights of The Individual by The Majority. Examples were provided in the immediate post-1776 years by the legislatures of some of the States. In reaction against earlier royal tyranny, which had been exercised through oppressions by royal governors and judges of the new State governments, while the legislatures acted as if they were virtually omnipotent. There were no effective State Constitutions to limit the legislatures because most State governments were operating under mere Acts of their respective legislatures which were mislabelled "Constitutions." Neither the governors not the courts of the offending States were able to exercise any substantial and effective restraining influence upon the legislatures in defense of The Individual’s unalienable rights, when violated by legislative infringements. (Connecticut and Rhode Island continued under their old Charters for many years.) It was not until 1780 that the first genuine Republic through constitutionally limited government, was adopted by Massachusetts--next New Hampshire in 1784, other States later.