No, perhaps they haven't. But I don't think the language of Christianity has ever been used in the US as it's currently being used. The values mentioned are being called Christian values only b/c this is focusing on the more positive aspects of Christianity rather than the negative ones used by current political leaders, not to exclude other religions.

The Bible has to be taken in its historical context, obviously. Yes, slaves, women, other races, etc aren't treated terribly well, but that's more a reflection of the society at the time than of Christ's teachings. Jesus himself never treated any woman offensively, so far as we know. He included them.

I mean, we've had Protestants protesting the Catholics, now we need someone to protest the Protestants *and* the Catholics!

We already do. We're called Episcopalians ;P