Hatred is bassed on fear of something unknown. Otherwise Idaho couldn't be both one of the whitest and most racist states - there's not too many minorities to have a familiar aversion to.
Parallel to that, most anti-gay bigots don't know any gays. Example: http://articles.sfgate.com/2010-01-2...rriage-couples
The video where he tearfully explains the scales falling from his eyes: http://www.youtube.com/watch?v=SnTwrnKb61Q