There is NO connection between Christianity and the KKK but the borrowing of symbols by the KKK in hopes of whitewashing its guilt.
That is basically Dr. Lewis's point about Wahhabism. With out the oil money they would be just another minor sect
Note: I am NOT saying everything is sweetness and light inside Islam. (IMO) What we are seeing is a civil war inside Islam and we've been dragged into it, being "The Far Enemy".
Are Ahmadinejad and Mezbah Yazdi and the Twelvers also alien to islam? And Khomeini?