"Let's say you and 20 other people have this group that is anti-racist, and all you do is talk about how bad racism is," he says. "Well, what good is that group doing? All you're doing is preaching to the choir. The way you resolve [differences] is you invite somebody to the table who disagrees with you, so you'll understand why they have that point of view. Then, perhaps, you will figure out a solution to dissuade their fears."