The law enforcement system in Mega-City One is a satire of the extremes of police and government authority. The judges have the authority to make the judgments normally taking days or months all in the span of a few seconds. Dredd, especially, has a zero-tolerance policy on any and all crimes, of which there are many. Within the city itself, a number of current societal issues are represented, such as rising obesity rates - the Fatties, who judge celebrity status on their girth in a mockery of today's obsession over weight loss and looking thinner - and racism, with the Ape Gang, who are Italian (kind of) second generation ape immigrants, which could be seen as poking fun at the way people perceive foreigners.
Trailer for the 2012 movie: