This happened in my church on last Sunday. A group of gay rights supporters interrupted the Sunday morning service by standing up during the service and chanting, throwing out pamplets, unfurling banners etc.
They were very rude and unruly. I don't think they helped their cause any by acting this way. My state didn't even have a gay marriage prop on its ballot.
I'm not sure what message they were trying to get across, but it seemed extremely out of place at that time.