"I posted on FB,..."
Well, there you go. Nuff said.
It's the FB, it'll happen. Maybe you will get lucky and they will delete you as a friend! I don't delete them because I know they are bothered by me than I of them.
Good luck getting an anti to change their ways. My wife went from anti to tolerant and now fully acknowledging the value and need for guns. She doesn't love em or share my passion but its as close as I think ill ever.get to changing a warped mind.