John Allen gives a summary of a provocative talk given by Bishop Thomas Curry (an Auxiliary of Los Angeles) on the results of the misconception that Constitution provides for a "wall" between Church and State. I believe the Bishop's main point was that the First Amendment binds the State not the Church. His other point is also quite salient: that the State ought not to be in the business of guaranteeing individual religious freedom. Obviously, this can go in many different directions -- but the examples he gives are very illuminating.
[Allen also mentions the continuing discrimination against Dalits -- both within Indian society and the Church -- in response to a question about racism within the Church. It's very important, I think, that the discrimination that Dalits feel be identified as a kind of racism, slavery, even.]