Richard Kuklinski, a pyschopathic serial killer who may have whacked over 200 people including multiple murders-for-hire on behalf of Gambino capo Roy DeMeo, as a teenager in the mid-1950s killed gays for sport according to Ice Man: Confessions of a Mafia Contract Killer by Philip Carlo based on prison interviews with the hit man:
Even back then the darkened cobble streets of Manhattan's far West Side were a gathering place for gay men. There were numerous dark bars that discreetly accomodated a homosexual clientele. One such place was Scottish Annie's, a safe haven for men who liked to wear skirts and dress as women. The dark bars on these dark, out-of-the-way streets were the perfect place for men to lead what often amounted to a second, hidden life.
Richard had nothing against homosexuals, he says, and didn't seek them out, though his steely-eyed Jimmy Stewart good looks invariably drew gay men to him, and if they were too pushy he hurt them; indeed, he killed them. These murders had, he says, nothing to do with sex; they only had to do with someone being too pushy.
Actor Michael Shannon plays The Iceman in a film due out next year as reported by The Hollywood Reporter.