OK jellies, any brilliant ideas for this situation?

We all know that I’m opinionated and bitchy. I need help with how to phrase something, in a polite, yet firm manner.

How do I tell my family (down-home Southern Baptist folks) that even though I’m a “Christian”, I fully support the rights of the gay community, in a way that will send a clear message that I don’t want to hear any more anti-gay crap about “depravity and sinfulness”, and I don’t want to hear jokes about “fags” or “homos” anymore… without being bitchy or pushy?

I might add that I don’t want to block these people on facebook, and I don’t want to ignore them in real life. I just want them to quit expecting me to back them up on anti-gay shit.