I would agree that, in recent years, Biblical teaching has little or nothing to do with racial discrimination in America. What passed for Biblical teaching was commonly used to justify discrimination in the past, and there are probably a scattering of hateful cranks still trying to sell that. That line of "Biblical" teaching was such a desperate attempt to find support, by reading things into irrelevant Biblical passages, that even a good share of very conservative fundamentalists saw it for what it was.