The Fourth International (FI) was a political international established in France in 1938 by Leon Trotsky and his supporters, having been expelled from the Soviet Union and the Communist International.
The League for Socialist Action (LSA) was the premier Trotskyist organization in Canada for much of the 20th century. Throughout its history the LSA went through many different names and iterations. In chronological order it was known as: the International Left Opposition (Trotskyist) of Canada, the Workers Party of Canada, the Socialist Policy Group, the Socialist Workers League, the Revolutionary Workers Party, The Club, the Socialist Education League, and the League for Socialist Action.
James Robertson (1928–2019) was the long-time and founding National Chairman of the Spartacist League (US), the original national section of the International Communist League. In his later years, Robertson was consultative member of the ICL's international executive committee.
Timothy Andrew Wohlforth, was a United States Trotskyist leader. On leaving the Trotskyist movement he became a writer of crime fiction and of politically oriented non-fiction.
The Socialist Equality Party is a Trotskyist political party in Sri Lanka. It was founded in 1968 as the Revolutionary Communist League by former student members of the Lanka Sama Samaja Party (Revolutionary) who joined the International Committee of the Fourth International. They remained loyal to Gerry Healy until the majority of the International split from his organisation. Since the death of its founder and leader Keerthi Balasooriya in December 1987, Wije Dias assumed the leadership. In 1996, it changed its name to the Socialist Equality Party, in line with other members of the surviving ICFI. In the 2005 Sri Lankan presidential election, the party's candidate, Wije Dias, came 11th of 13 candidates, with 3,500 votes (0.04%).
John Gordon Michael Lawrence was a leading far-left activist in a wide variety of groups in Britain.
Richard S. Fraser was an American Trotskyist and the principal theoretician of the doctrine of revolutionary integrationism in the 1950s within the Socialist Workers Party (US), against George Breitman's advocacy of support for black nationalism. He joined the Trotskyist movement in 1934, and was a founding member of the Socialist Workers Party (SWP) in the US. He made a study of the black question in the late 1940s, after the Party began to lose hundreds of black recruits. This was due not only to the rise of McCarthyist repression of the SWP, but also, of the party's burgeoning opportunism on the question of black nationalism. Informally, the leadership had even begun discouraging white and black members from forming interracial couples.
The Socialist Equality Party (SEP) is an unregistered Trotskyist political party in Australia. The SEP was established in 2010 as the successor party to the Socialist Labour League, which was founded in 1972 as the Australian section of the International Committee of the Fourth International (ICFI).
The Spartacist League/U.S. is a Trotskyist political grouping which is the United States section of the International Communist League, formerly the International Spartacist Tendency. This Spartacist League named themselves after the original Spartacus League of Weimar Republic in Germany, but has no formal descent from it. The League self-identifies as a "revolutionary communist" organization.
The Revolutionary Tendency within the American Socialist Workers Party was an internal faction that disagreed with the direction the leadership was taking the party on several important issues. Many groups and movements would have their roots in the RT, both in the United States and internationally, including the Socialist Equality Party and the world Spartacist and LaRouche movements and their various splinters.
The International Committee of the Fourth International (ICFI) is a public faction of the Fourth International founded in 1953. Today, two Trotskyist internationals claim to be the continuations of the ICFI; one with sections named Socialist Equality Party which publishes the World Socialist Web Site, and another linked to the Workers Revolutionary Party in the UK.
The Fourth International (FI), founded in 1938, is a Trotskyist international.
The International Communist League (Fourth Internationalist) abbreviated as ICL(FI), earlier known as the international Spartacist tendency (iSt) is a Trotskyist international. Its largest constituent party is the Spartacist League (US). There are smaller sections of the ICL (FI) in Mexico, Canada, France, Germany, Ireland, Italy, Japan, South Africa, Australia, Greece and the United Kingdom.
The Workers Revolutionary Party (WRP) is a Trotskyist group in Britain once led by Gerry Healy. In the mid-1980s, it split into several smaller groups, one of which retains possession of the name.
The Revolutionary Communist Party was a British Trotskyist group, formed in 1944 and active until 1949, which published the newspaper Socialist Appeal and a theoretical journal, Workers International News. The party was the ancestor of the three main currents of British Trotskyism: Gerry Healy's Workers Revolutionary Party, Ted Grant's Militant and Tony Cliff's Socialist Workers Party.
The Socialist Workers Party (SWP) is a communist party in the United States. The SWP began as a group which, because it supported Leon Trotsky over Soviet leader Joseph Stalin, was expelled from the Communist Party USA. Since the 1930s, it has published The Militant as a weekly newspaper. It also maintains Pathfinder Press.
Pierre Lambert was a French Trotskyist leader, who for many years acted as the central leader of the French Courant Communiste Internationaliste (CCI) which founded the Parti des Travailleurs.
Orthodox Trotskyism is a branch of Trotskyism which aims to adhere more closely to the philosophy, methods and positions of Leon Trotsky and the early Fourth International, Vladimir Lenin and Karl Marx than other avowed Trotskyists.
Michael Banda, born Michael Alexander Van Der Poorten, was a Sri Lankan communist activist best known as the General Secretary of the British Workers Revolutionary Party.
