Jack Whittier Barnes (born 1940) is an American Communist and the National Secretary of the Socialist Workers Party. Barnes was elected the party's national secretary in 1972, replacing the retiring Farrell Dobbs. He joined the SWP in the early 1960s as a student at Carleton College in Minnesota and quickly became a leading member of the party's youth wing. From the 1990s to the present, Barnes has directed his party to support the governments of North Korea and Equatorial Guinea; has instructed the party to abstain from antiwar or anti-racist activism; and in January 2016 lent his support to the occupation of federal lands, in Oregon, by white supremacists. Barnes was a key advocate of the party's "turn to industry" in the 1970s, its exit from the Fourth International in the 1980s and its orientation towards the Cuban Communist Party in the 1990s.
Barnes was one of the central organizers for the idea that the party should "turn to industry". In 1978 the party's National Committee approved a report by Barnes which argued that "we must subordinate everything else to immediately organizing to get a large majority of the membership of the SWP into industry and the industrial trade unions". SWP members took up union jobs in basic industries such as meatpacking, steel, mining and textile industries.
Work within these industries became a condition of membership in the SWP, as the party attempted to penetrate the portions of the working class that it feels will be most combative and open to communist ideas in the future: those unionized in basic industries. Party members organized within these unions form factions within the party. The SWP asserts that this course follows the continuity of the communist movement from Marx and Engels to Lenin's time, which stresses a party based in the working class.
Barnes's article "Their Trotsky and Ours" also underpinned the party's decisions in the 1980s to abandon its support for Leon Trotsky's theory of Permanent Revolution, and its withdrawal from the world Trotskyist movement and the reunified Fourth International. Barnes repudiated the traditional Trotskyist understanding of Permanent Revolution in favor of Lenin's pre-World War I position of "democratic-dictatorship of the proletariat and peasantry", and a highly sympathetic view of the governments of Cuba, Nicaragua and Grenada.