I can attest to that. Some friends live on the parade route of a Gay Pride Parade (in another city). They now go away that weekend, because of such activities as you refer to. When they asked the City/Parade organizers to reimburse them for the expenses (as this city does with other events), they were refused and told 'You can't fight the gay mafia here'.
This is in Long Beach, Calif.
It’s the same in Philadelphia. Had to cover my son’s eyes with my hands the first time we encountered the “pride” parade on the way home from church.