Dehumanization, totalitarian governments, malignant diseases, super-genetic technology, social unrest, and violence of all kinds spreading into cities are common themes in dystopian films that bravely reveal the ominous future that may be full of them.
Dystopia is a fictional society, as opposed to utopia, and dystopian films often depict a universe in which the backdrop is the proliferation of inhuman technology, human-caused catastrophe, or class revolution.