Pedophile advocacy

Walter Henry Breen Jr. (September 5, 1928 – April 27, 1993) was an American numismatist, writer, and convicted child sex offender as well as the husband of author Marion Zimmer Bradley. He was known among coin collectors for writing Walter Breen's Complete Encyclopedia of U.S. and Colonial Coins. "Breen numbers", from his encyclopedia, are widely used to attribute varieties of coins. He was also known for activity in the science fiction fan community and for his writings in defense of pederasty as a NAMbLA activist.

John Henry Mackay (February 6, 1864 – May 16, 1933) was a Scottish-German egoist anarchist, thinker and writer. Born in Scotland and raised in Germany, Mackay was the author of Die Anarchisten (The Anarchists, 1891) and Der Freiheitsucher (The Searcher for Freedom, 1921).
Later in life, under the pseudonym Sagitta, he became an advocate for homosexual love between men and boys.

Ian Campbell Dunn (1 May 1943 – 10 March 1998) was a Scottish gay rights and pro-paedophilia campaigner. He was founder of The Scottish Minorities Group (later known as Outright Scotland), one of the first British gay rights organisations, and helped establish Britain's first gay newspaper, Gay News. Dunn also worked as the editor of Gay Scotland magazine and co-founded the Paedophile Information Exchange.