Once in a while you get people that maybe because of economic reasons, or have a social network, they get attracted. But it's a very tiny percent so that when we look at, you know, who are pastors and who are the head clergy of these congregations, they're overwhelmingly white, just a few African Americans, and those folks are usually called to what were formerly white congregations, or they started interracial church from the get-go.

If you move here from somewhere else, I often think if I move to Germany, for example, or if I move China and I go worship there I will understand and I'll be willing to give up a lot of my culture because I'm in somebody else's homeland. So I'm going to have to act German or Chinese, whatever that might mean.

What happens is sometimes these congregations will still have the white style of worship, even though they're mixed, because folks are willing to give up whatever they may have come with. So it's still quite a stretch for African Americans, yeah.

There's one denomination in particular, though, that has pushed very hard to be multiracial in its denomination - not only its denomination but, I mean, in its congregations, and it's called the Evangelical Covenant Church, http://www.covchurch.org/ which is headquartered in Chicago. Their whole goal is that's the kind of churches they start, multiracial, and I think they say now 20 percent of their churches are that.

It's the sad fact of how race still works in our country. We find that over and over again.

I spent a lot of time developing in books why worshipping separately actually impacts inequality, economic, social, on and on. So I really do believe there are huge advantages to being together even though it's difficult, even though we have a lot to learn.

What sort of difficulties would happen when people of different cultures try to come together to worship? Tiny little things such as let's tell jokes with each other.