It's in his book Culture Warrior, I recall. I couldn't tell you the page but it probably has a glossary and should be in your local library.

The short version is that there is this New England town that the fags descended on once a year to do really horrific stuff (gay sex) out in the street in broad daylight and the people were trying to put a stop to it but all the 'powers that be' didn't want to interfere. Bill had footage and showed it to ABC/NBC (wherever he was before fox) and they purposely killed the story. It would have been a media frenzy and gained them lots of eyeballs ... but no dice.