Listen to the radio interview that Ray Comfort gave to Hollywood psychologist Carole Lieberman about his move 180.
 
He is so good about gentilly but clearly sharring the truth with everyone.  He used a technique about that gentilly suggested to the host that if someone is unwilling to change their mind they have a "closed mind" and are biggoted and intollerant against other ideas, and even worse when they are unwilling to allow people to discuss those ideas.
 
For the interview and a little more about the encounter see
http://www.onenewsnow.com/Culture/Default.aspx?id=1561584
 
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Mark Rouleau