...is "Dystopian Cities"
To clear up a little bit on what "dystopian" actually means.
"A dystopia (from Ancient Greek: δυσ-: bad-, ill- and Ancient Greek: τόπος: place, landscape)  is, in literature, an often futuristic society that has degraded into a repressive and controlled state, often under the guise of being utopian.  Dystopian literature has underlying cautionary tones, warning society  that if we continue to live how we do, this will be the consequence. A  dystopia, thus, is regarded as a sort of negative utopia and is often  characterized by an authoritarian or totalitarian  form of government. Dystopias usually feature different kinds of  repressive social control systems, a lack or total absence of individual  freedoms and expressions and constant states of warfare or violence.  Dystopias often explore the concept of humans abusing technology and  how humans individually and collectively cope with technology that has  evolved too quickly. A dystopian society is also often characterized by  mass poverty and brutal political controls such as a large military-like  police."
Thank you, Wikipedia. You just saved me the better half of an hour explaining it myself.
Film References
"A typical dystopia paints a picture of government or society attempting  to exert control over free thought, authority, energy, freedom of  information. Others focus on systematic discrimination and limitations  based on a variety of factors - genetics, fertility, intelligence, and  age being a few examples." Wiki
Such is the case in, e.g:
Aeon Flux, Babylon A.D, Blade Runner, Demolition Man, District 9, Escape from New York (aka Die Klapperschlange), Equilibrium, Gattaca, Judge Dredd, Metropolis, Minority Report, The Running Man, A Scanner Darkly, Strange Days, Serenity
Then, we have corporate-based dystopias.
"A corporate based dystopia is similar to a government/societal dystopia  with the exception that the repressing power is a private company rather  than a government. These stories generally include the motive of  commercial profit instead of, or in addition to, the benefits of  increased power and authority." Wiki
Good examples are:
Akira, Alien movies, Total Recall (yes Henry, I know^^), I Robot, RoboCop, Fortress, The Island, Metropia, Paranoia 1.0, Resident Evil movies, Surrogates, Tank Girl, Tekken, No Escape, Johnny Mnemonic...
Then we have Cyberpunk, characterized by "high-tech, low-life", whre advanced technology itself is dystopian. Examples:
Akira, Avalon, Blade Runner, eXistenZ, Ghost in the Shell, Metropolis, The Terminator, Videodrome, Johnny Mnemonic, Strange Days...
Then Post-Apocalyptic storylines, meaning everything went basically to complete shit on planet earth. The aftermath of a disaster - typically nuclear holocaust, war, plague - that justifies a civilization's turn towards dystopian like behaviors.
12 Monkeys, 28 Days Later, The Book of Eli, Children of Men, Mad Max, The Postman, Terminator Salvation, Titan A.E, Ultraviolet, WALL-E, Waterworld,...etc
Of course, some of these overlap, thematically. Still, this should suffice for giving a general idea of the concept of "Dystopia".
Thanks for reading, have a nice day.
 
