But in the US, when you have two separate cultures, each with its right, each of which has come to exist in this political entity in the last couple hundred years, each feeling like, "I have the right to hold onto my culture," and that's what makes it difficult.

To a large extent, people's interest in the character is the mystery of the character.

It worries me a little bit the reach and power of TV. More people saw me in The Practice than will ever see me in all the stage plays I ever do. Which is sort of humbling. Or troubling. Or both.

I mean, so if I've talked to whites in City of Refuge, sometimes they'll wonder, "Why do we do things a certain way, and why do we make a big deal out of events?" And what's happening is they're falling back on their understanding of the way that church should work. It's not always working exactly like that, and they feel frustration or confusion. Sometimes people leave. That's certainly common in mixed churches.

But what we found in the study is that churches are ten times less diverse than the neighborhoods they sit in. So there's something more going on than just reflecting the neighborhood, yeah.

I certainly think so, and I argue so, and I give talks on that. Are there risks by putting people together? Absolutely. Is there value in the black church? Absolutely. Is there value in having immigrant churches? Absolutely. But if we don't have congregations gathering with people of different races, what we're doing is we are redefining racial division, a racial inequality.

It's one of the things we find in these congregations is that they are much more likely to be sort of up-beat worship styles, more likely that people in these congregations say "Amen," maybe get up and dance some, tend to be a little bit more lively than a typical white service would be, but not as lively as a typical black service would be.