Career
The ISL moved away from revolutionary politics and merged with Norman Thomas" Socialist Party in 1958. Schachtman and many of the "Schachtmanites" moved rapidly to the right. Landy was a prominent supporter of Hal Draper"s left opposition to Shachtman"s support for the Bay of Pigs invasion, joined Draper in splitting from the Socialist Party in the early 1960s.
In 1969, it became the International Socialists ( Instruction Section), and Landy retained a leadership role, but he became increasingly interested in the ideas of black power and the ideals of the French uprising of May 1968.
Within the Instruction Section, he became a leader of the opposition "Revolutionary Tendency". Although he was elected to the Central Committee of the new organisation, in 1975 he opened a debate over what he believed was an increasing stagist tendency, and the organisation"s refusal to call for a general strike under then current circumstances.
He was soon expelled from the organisation alongside Walter Daum, and the two"s supporters, who had formed the "Revolutionary Party Tendency", soon joined them in founding the League for the Revolutionary Party (LRP). Sy Landy remained the National Secretary of the LRP until his death, occasionally working as a teacher in Jersey City.
In 1992, he worked with two other organisations to found the international Communist Organization for the Fourth International.