By definition the total opposite of a utopia often caused by the complete collapse of an attempt at creating said utopia. The primary issue with utopia is that no two people can 100% agree on everything 100% of the
time. The other and much bigger issue is that some tyrannical entity (individual or group)
will take control and twist it to serve only them resulting in a societal
hell and the suffering of others. Sir Thomas More wrote Utopia defining both Utopia and Dystopia (a term he had coined). George Orwell's novel
1984 and Aldous Huxley's Brave New World both show what happens in a dystopian
society. The common traits are dehumanization, tyranny, ecological disasters, societal collapse, and the like.