The premise of "Demolition Man" is basically a fantasized hellscape from the far right of the political spectrum. In the future, the populace has become so subdued into political correctness, the entire country has been so sanitized that even swearing results in a fine. And all of this happens within maybe 30 years after the initial scene set in a crime-overrun 1996 Los Angeles.
"The Libs" have won. Everyone has gone soft. The radio plays children's cartoons back to back in self-driving cars. When a criminal mastermind (Wesley Snipes) is released from cryogenic sleep, no one, not even the police, can handle it. So they defrost tough-as-nails Sgt. John Spartan (Sylvester Stallone) to take him down. With HGH-fueled veins, he's here to bring violence back to America and this arch-criminal to his coffin.
But "Demolition Man" is a satire, not a screed. It's silly fun that's totally self-aware.
"We're police officers. We're not trained to handle this kind of violence!" Rob Schneider cries after watching a squad of LAPD officers get manhandled by Snipes, in a movie released one year after the Los Angeles riots.
Also, fun fact: According to Dennis Leary, who has a cameo, Snipes insisted on doing all of his own stunts. The director waited until Snipes went back to his trailer and then reshot them all with professional stunt doubles.