Trotskyism is the political ideology and branch of Marxism developed by Russian revolutionary and intellectual Leon Trotsky along with some other members of the Left Opposition and the Fourth International. Trotsky described himself as an orthodox Marxist, a revolutionary Marxist, and a Bolshevik–Leninist as well as a follower of Marx, Engels, Vladimir Lenin, Karl Liebknecht, and Rosa Luxemburg.
The Fourth International (FI) was established in France in 1938 by Leon Trotsky and his supporters, having been expelled from the Soviet Union and the Communist International.
The Revolutionary Communist Party (RCP) is the British section of the International Marxist Tendency. The party describes itself as building "a fighting, communist leadership in the working class" in order to "overthrow capitalism". The organisation traces its lineage to the group 'Socialist Appeal', which was founded by supporters of Ted Grant and Alan Woods after they were expelled from the Militant tendency in the early 1990s. The RCP's parent organisation, International Marxist Tendency, describes its politics as descending from Karl Marx, Friedrich Engels, Vladimir Lenin and Leon Trotsky.
Duncan Hallas, was a prominent member of the Trotskyist movement and a leading member of the Socialist Workers Party in Great Britain.
The Fourth International Posadist is a Trotskyist international organisation. It was founded in 1962 by J. Posadas, who had been the leader of the Latin America Bureau of the Fourth International in the 1950s, and of the Fourth International's section in Argentina. Between their split from the International Secretariat of the Fourth International in 1962 and Posadas' death in 1981, Posadists developed a strain of communism that included several fringe ideas, which brought them into conflict with more mainstream left-wing groups.
The Revolutionary Socialist League (RSL) was a Trotskyist group in the United States established in 1973 and disbanded in 1989.
The Spartacist League 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 International Marxist Group (IMG) was a Trotskyist group in Britain between 1968 and 1982. It was the British Section of the Fourth International. It had around 1,000 members and supporters in the late 1970s. In 1980, it had 682 members; by 1982, when it changed its name to the Socialist League, membership had fallen to 534.
The Workers' International League (WIL) was a Trotskyist group that existed in Britain from 1937 to 1944.
The Revolutionary Workers' Party is a Russian Trotskyist organisation established in 1999. From 2002 to 2011 there were two active organisations called the 'Revolutionary Workers' Party'. In April 2011, activists from one of the two, centred in Perm, merged their organisation into the Russian Socialist Movement. In May 2019 part of the RWP split and merged into the International Marxist Tendency, naming themselves Marxist Tendency.
Revolutionary socialism is a political philosophy, doctrine, and tradition within socialism that stresses the idea that a social revolution is necessary to bring about structural changes in society. More specifically, it is the view that revolution is a necessary precondition for transitioning from a capitalist to a socialist mode of production. Revolution is not necessarily defined as a violent insurrection; it is defined as a seizure of political power by mass movements of the working class so that the state is directly controlled or abolished by the working class as opposed to the capitalist class and its interests.
The International Marxist Tendency (IMT) is a Trotskyist political international founded by British-based South African political theorist Ted Grant and his supporters after they broke with the Committee for a Workers' International in 1992. The organization's website, Marxist.com or In Defence of Marxism, is edited by Alan Woods. The site is multilingual, and publishes international current affairs articles written from a Marxist perspective, as well as many historical and theoretical articles.
Alan Woods is a British Trotskyist political theorist and author. He is one of the leading members of the International Marxist Tendency (IMT) as well as of its British affiliate group Socialist Appeal. He is political editor of the IMT's In Defence of Marxism website. Woods was a leading supporter within the Militant tendency within the Labour Party and its parent group the Committee for a Workers' International until the early 1990s. A series of disagreements on tactics and theory led to Woods and Ted Grant leaving the CWI, to found the Committee for a Marxist International in 1992. They continued with the policy of entryism into the Labour Party. Woods has expressed particularly vocal support for the Bolivarian Revolution in Venezuela, and repeatedly met with the Venezuelan President Hugo Chávez, leading to speculation that he was a close political adviser to the president.
The International Socialist Tendency (IST) is an international grouping of unorthodox Trotskyist organisations espousing the ideas of Tony Cliff (1917–2000), founder of the Socialist Workers Party (SWP) in Britain. IST supporters are sometimes called "Cliffites". It has sections across 27 countries; however, its strongest presence is in Europe, especially in Britain.
Far-left politics in the United Kingdom have existed since at least the 1840s, with the formation of various organisations following ideologies such as Marxism, revolutionary socialism, communism, anarchism and syndicalism.
The Organization of Marxists was a radical left-wing political association in Ukraine.
