The whole post is at Gene Expression, but the chart to the left is the core of it. 1980-2008 can to a great extent be labelled a conservative era, when the New Right set the terms of the national debate on politics and culture. And yet concomitantly there was a massive secularization process, as 1 million Americans left religious affiliation per year in the in the 1990s, and half a million per year in the 2000s.
Fake fact: America is not secularizing