This is a world where there is not just one jerkass, but it seems like everyone is a jerkass. This usually is used to help justify the rebelliousness or vigilantism of the hero, antihero, and/or the motivations for a villain. I am thinking of the film Falling Down in this respect.
Sometimes it is the driving force of the narrative such as in Tales from the Crypt and other EC comics stories where we see several stories, each with their own jerkasses getting their due.
Other examples: The Fallout series, The Toxic Avenger (and I am thinking about anything directed by Lloyd Kaufman), any manner of revenge-sploitation, etc.