I'm not sure most parents would actually say, "get out faggot." When it's suddenly THEIR chid, I think it changes their thinking.
I used to be on a forum that had a lot of very far right types of individuals. Some who were very outspoken and seemed to think that whoever spoke the nastiest would win the argument. One of the worst of these, though, surprised me because he would not join in the gay-bashing that went on. Turns out he had a gay brother, a brother he loved. So in his far-right world, there was this exception for gays...because HE had a gay person in HIS family.
I've seen the same thing with some of the serious rednecks in my neighborhood. I was walking my dogs past one of their houses and saw a little black boy standing in the open doorway. One of their white sons was also running around with a black girl...his cousin.
The people right next door to me...their daughter married a black guy and they have a child. Suddenly these rednecks find they do have a bit of tolerance buried deep down in their souls somewhere.