A dystopia (from Ancient Greek ¦Ä¦Ô¦Ò (dus) 'bad', and ¦Ó?¦Ð¦Ï? (t¨®pos) 'place'), also called a cacotopia or anti-utopia, is a community or society that is extremely bad or frightening. It is often treated as an antonym of utopia, a term that was coined by Sir Thomas More and figures as the title of his best known work, published in 1516, which created a blueprint for an ideal society with minimal crime, violence, and poverty. The relationship between utopia and dystopia is in actuality, not one simple opposition, as many utopian elements and components are found in dystopias as well, and vice versa. Dystopias are often characterized by fear or distress, tyrannical governments, environmental disaster, or other characteristics associated with a cataclysmic decline in society. Themes typical of a dystopian society include: complete control over the people in a society through the usage of propaganda, heavy censoring of information or denial of free thought, worshiping an unattainable goal, the complete loss of individuality, and heavy enforcement of conformity. Despite certain overlaps, dystopian fiction is distinct from post-apocalyptic fiction, and an undesirable society is not necessarily dystopian. Dystopian societies appear in many fictional works and artistic representations, particularly in stories set in the future. Famous examples include Yevgeny Zamyatin's We (1920), Aldous Huxley's Brave New World (1932), George Orwell's Nineteen Eighty-Four (1949), and Ray Bradbury's Fahrenheit 451 (1953). Dystopian societies appear in many sub-genres of fiction and are often used to draw attention to society, environment, politics, economics, religion, psychology, ethics, science, or technology. Some authors use the term to refer to existing societies, many of which are, or have been, totalitarian states or societies in an advanced state of collapse. Dystopias, through an exaggerated worst-case scenario, often make a criticism about a current trend, societal norm, or political system.

Reference
Wiki: Dystonia