Wikipedia says that “a dystopia (from the Greek δυσ- and τόπος, alternatively, cacotopia, kakotopia, or simply anti-utopia) is a community or society that is undesirable or frightening.” I tend to disagree with this definition because, when talking about societies and politics, the hedonic notion of undesirable or unpleasant is relative to the one passing the judgment, and to them alone. Is a dystopia disagreeable for the characters living in it or for the reader? One could say both, and neither.
Here is a list of dystopian books I read and that I warmly recommend. They are authentic masterworks of the literature.
The Iron Heel – Jack London (1908)
We (Мы) – Yevgeny Zamyatin (1924)
Brave New World – Aldous Huxley (1932)
1984 – George Orwell (1949)