There are three things, and it depends on the group that we're talking about, but there's history, there's culture, and then there's social networks. So, you know, historically black and white, they worship together until about the end of slavery, and people started moving out into separate churches. But it was because of discrimination and racism and such that blacks began to establish their own denominations and their own churches.

I really do think that every time you play a role well, you are in danger of being identified with that role until the next big thing comes along.

I think it's pretty dynamic. There's a lot of energy there and life, and you'll have women dressed in their traditional African dress when they come, and you have people from all over the place, and some people have headphones on because they're listening in Spanish.

Downsides, yeah, and when there are more downsides when churches first start - they go through stages of transforming to becoming multiracial. So in the beginning stages there's often a lot of pain, a lot of confusion, a lot of people leave.

I see this in the way that sermons are preached. How would you give a Black Nationalist speech or campaign for the Republicans when you're an integrated congregation? It doesn't happen.

So there was great clashes when, you know, if you believe you shouldn't remove your shoes and someone's taking their shoes off, how can they do this? That actually was such a big clash in this case that they had to put a curtain down the middle of where they would worship.

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.