If it's "heretical" is it Christian? and besides not all claiming to be Christian are Christian, which after all is the point of the whole "Mormon question", you've proven nothing by making wide generalizations.
As for the klan, it is an extremely small group today and the same applies to them. Racism is not Christian. It wasn't when it was practiced by Protestant and Catholics and it still isn't. Christians who are born again have repented of any racism in their past.
As a matter of fact, post #15 seems to make just the opposite point than that for which it was intended.