Note that the modern religious right movement started as a racist political ploy. From Dartmouth Professor Randall Balmer’s article, “The Real Origins of the Religious Right: They’ll tell you it was abortion. Sorry, the historical record’s clear: It was segregation”:
[T]he abortion myth quickly collapses under historical scrutiny. In fact, it wasn’t until 1979 – a full six years after Roe – that evangelical leaders, at the behest of conservative activist Paul Weyrich, seized on abortion not for moral reasons, but as a rallying-cry to deny President Jimmy Carter a second term. Why? Because the anti-abortion crusade was more palatable than the religious right’s real motive: protecting segregated schools. So much for the new abolitionism.