To be honest with you...I don't know how many or even if they did...I will do some more looking to see what I can find out about that.
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Please don't. I think we can all agree that even if those strong men of the KKK hated Catholics and Jews they held a far stronger, more aggressive. more passionate and more deadly hatred for blacks. A Catholic might not get invited to the picnic or a Jew to the dance but I doubt they had much to fear bodily, certainly not anything along the lines of the atrocities committed against blacks (of which there is substantial photographic evidence).