The Knights of Columbus organization doesn't do secret work, according to its official site. The Knights of Columbus is a fraternal organization whose main mission is charity work.
Knights of Columbus membership is available to Catholic men, says the Knights of Columbus. The organization participates in charitable activities, such as the Special Olympics, Habitat for Humanity and Coats of Kids. The Knights of Columbus has approximately 1.8 million members worldwide. Father Michael J. McGivney founded the organization in New Haven, Connecticut, in 1882. The Knights of Columbus organization is similar to the Moose, Elks and Lions clubs, according to CatholicCulture.org.