U.S. Trotskyist David Fender was active in the Socialist Workers Party and a number of its political factions and offshoots; mainly the Communist Tendency, the Leninist Faction (later known as the Class Struggle League), the Vanguard Newsletter and the Spartacist League. Fender was also secretary to Peng Shu-tse and Chen Pi-len in Paris in the 1960s. Peng was one of the founders of the Chinese Communist Party and the leader of the Trotskyist movement in China from the 1920s until the early 1950s when he and his wife, Chen Pi-len, also an active Trotskyist, were forced to flee the country with many of their followers after Mao Zedong's attack on the Chinese Trotskyists.
From the guide to the David Fender Papers, 1952-1974, (Tamiment Library / Wagner Archives)