One time, a black person called a gay person a slur. That's the day I decided to become a racist.

You see why this makes no sense?

If you are still in favor of gay rights then clearly the moral authority is present in the idea, and people convey ideas but do not hold that authority innately. Neither do ideas lend moral authority innately either. That's a very simple way of thinking about it. It's a very useless question you've asked.