"Many if not most of our home-grown religious bigots (I didn't mention the KKK, YOU did) are self-described Christians"

You have no proof of that Eric.    You might stop to consider that the majority of all Americans, good or bad, call themselves Christian.    When naming bigotry, if you do nothing but hit the standard  statistical distribution, some will be Christian.

Either way your implication that Christian teaching in any ways encourages racial bigotry is completely contrary to my 60 years of personal experience.    And to say that the Muslim church is LESS ethnocentric than the Christian church is reckless conjecture.   (and we are living post 20th century, past statistics are irrelevant).   You won't find Christian hit squads murdering Muslim citizens and putting it on TV, nor hanging the bodies for public display.

We agree that many, if not most followers, in both Christianity and the Muslim faith do not promote violence as a form of evangelism.