I also suspect something more than this release tells. I also have a problem with one quote.
"That's as offensive as telling an African American, 'you can ride on the bus, but just sit in the back.'"
Black isn't a behavior, it's a skin color. If someone had been there with a sign proclaiming, "Gangstas for life" I'd have probably had a problem with it, no matter how many congressmen they promised to lobby or no matter how much fundraising they promised to do.
If Nellie doesn't want her group affiliated with homosexuals, it doesn't have to be. The whiners can go arrange their own march.