The Prowler in the City at the Edge of the World
From Wikipedia, the free encyclopedia
In Harlan Ellison's 1967 anthology, Dangerous Visions, he presents a collection of several different views of science fiction and fantasy, through 34 authors (himself included). This was his story.
It is written as a follow-up to Robert Bloch's story (immediately before it in the book), "A Toy for Juliette". In it, the legendary Jack the Ripper has been somehow yanked into a futuristic metropolis of sterility, where anyone is free to do what they want, however arcane or illegal. He is brought before Juliette, a girl who is appropriately named after the Marquis de Sade's Juliette.
Ellison continues the story into the existentialist realm, of Jack the Ripper being driven (more) insane by the tortures of the sadistic (named after M. de Sade) future-people(? Not really human).