> So I'm not sure what "sincere religious belief" those people would have been using in their arguments - just being a Christian doesn't automatically make any sincere belief you hold a religious one.
There are absolutely sincere people whose religious beliefs are that interracial marriage is morally wrong[1].
> Reagan says many black athletic stars choose white wives in a willful attempt to make their offspring lighter, challenging God’s plan. “He don’t want them to be like him, so he’ll marry another. … It’s another defiance of God’s law, it’s a worldly way.” And the pastor condemns fellow ministers who perform interracial marriages. “Some of the men in pulpits should have a pantywaist instead of a preacher coat on!”
There are absolutely sincere people whose religious beliefs are that interracial marriage is morally wrong[1].
> Reagan says many black athletic stars choose white wives in a willful attempt to make their offspring lighter, challenging God’s plan. “He don’t want them to be like him, so he’ll marry another. … It’s another defiance of God’s law, it’s a worldly way.” And the pastor condemns fellow ministers who perform interracial marriages. “Some of the men in pulpits should have a pantywaist instead of a preacher coat on!”
[1] https://www.splcenter.org/hatewatch/2014/02/19/tennessee-pas...