Rick's Cafe Americain

Many of the more open-minded religious conservatives argue that sexuality/sexual orientation is something that should be tolerated, so long as it is kept “behind closed doors”.  In other words, whatever consenting adults choose do in the privacy of their own homes is OK as long as it stays there.  Why should religion not be treated the same way?  Why should the right to practice your religious beliefs include the right to inject them into the public sector and—more to the point—official speech/actions?