What connection does or did the Knights of Columbus have with the KKK?

Answer 1

None whatsoever. The Knights Of Columbus are a Catholic public service organization, and entirely above board. The KKK was functionally a terrorist group that in fact persecuted Catholics.

You may be thinking of The Knights of the White Camelia.

Update: There IS a connection between the two groups: in the 1920s the Knights of Columbus actively worked AGAINST the KKK in Oklahoma, who, as stated above, had a history of persecuting American Catholics.

Answer 2

The KKK is not associated with the Knights of Columbus (KofC) in any way. Historically, the KKK is anti-Catholic. The KofC is a worldwide Catholic men's organization. They devote themselves to charitable work and various other charitable and diocesan & parish social and charitable events.

When the Mexican Government began killing Roman Catholics for practicing their faith, the United State Knights of Columbus raised 1 million USD for education, the KKK sent a telegram to the Mexican goverment pledging 10 million to help them murder Catholics.

There is no connection between the two, only a hate group of Protestants only, (They do not let Catholics join, and would like us all to die) and a Catholic only group that does community service.