What is dystopian fiction?

From Wikipedia: Dystopian fiction (sometimes referred to as apocalyptic literature) is the creation of an utterly horrible or degraded futuristic society that is generally headed to an irreversible oblivion, or dystopia. They are often metaphors for the different directions humanity can take in its choices. Both utopias and dystopias are commonly found in science fiction and other speculative fiction genres, and arguably are by definition a type of speculative fiction. Dystopia is defined as an alternate society characterized by a focus on negatives, usually frightening, such as mass poverty, public mistrust and suspicion, police state, squalor, suffering, and/or oppression, that society has most often brought upon itself. Dystopias usually extrapolate elements of contemporary society and are read by many as political warnings. Many purported utopias reveal a dystopian character by suppressing justice, freedom and happiness.

Books we have recapped that are dystopian: