The number 33 is used by Ku Klux Klan adherents to signify the Ku Klux Klan. Since the 11th letter of the alphabet is K, three Ks signify "KKK" or the Ku Klux Klan. When using this reference, Klan members will frequently add the number 6 at the end, as in 33/6, because they think the Klan is currently in its sixth historical "era." Less commonly, some holdouts may still use the numeric code 33/5.
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