“This begs the question, if Mr. & Mrs. Knapp were Black ministers and they refused to marry klan members, White supremacists, etc., or if they were rabbis who refused to marry neo nazis or Holocaust deniers, would they still face prosecution? “
even though I like the idea of your question, I think their argument would be the groups you mention are not protected groups, notwithstanding the fact that in a country whose basic principles are all men a created equal, we have , by law, created groups that are unequal.
In a way, I’m using an Alinsky tactic, Make the enemy live up to their own book of rules. Even though, gay radicals, like leftist extremists in general are so devoid of standards they thrive on hypocrisy.