"Repealing Roe v. Wade stands as a perennial high-priority issue for conservative Christian voters, so much so that today it is hard to imagine a time when that was not the case. But in the early 1970s, abortion was not the primary issue that catalyzed the Religious Right, as it would in later years. Initially, the Christian response to Roe v. Wade was mixed. Instead, conservative voters coalesced around the issue of racial integration in schools."
In short, the quantitative and qualitative evidence – and, I will add, my own anecdotal evidence – strongly support the argument that the Christian Right has been a primary factor in the decline of white evangelicalism in the last decade and the dramatic rise of the nones since the 1990s.
Alongside the religious rage that brought Trump to power, there is indeed a long black-led freedom movement that has spoken prophetically against the institutional racism and brazen hypocrisy of a nation built on the original sin of race-based slavery.