The Bolsheviks, led by Vladimir Lenin, were a far-left faction of the Marxist Russian Social Democratic Labour Party (RSDLP) which split with the Mensheviks at the Second Party Congress in 1903. The Bolshevik party seized power in Russia in the October Revolution of 1917, and was later renamed the Communist Party of the Soviet Union. Their ideology and practices, based on Leninist and later Marxist–Leninist principles, are known as Bolshevism.
The Russian Revolution was a period of political and social change in the Russian Empire, starting in 1917. This period saw Russia abolish its monarchy and adopt a socialist form of government following two successive revolutions and a bloody civil war. The Russian Revolution can also be seen as the precursor for the other European revolutions that occurred during or in the aftermath of World War I, such as the German Revolution of 1918–1919.
Trotskyism is the political ideology and branch of Marxism developed by Russian revolutionary Leon Trotsky and some other members of the Left Opposition and 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.
Workers' Fight has been the name of several Trotskyist groups and publications in Britain.
The Workers Socialist League (WSL) was a Trotskyist group in Britain. The group was formed by Alan Thornett and other members of the Workers Revolutionary Party (WRP) after their expulsion from that group in 1974.
Jay Lovestone was an American activist. He was at various times a member of the Socialist Party of America, a leader of the Communist Party USA, leader of a small oppositionist party, an anti-Communist and Central Intelligence Agency (CIA) helper, and foreign policy advisor to the leadership of the AFL–CIO and various unions within it.
The Revolutionary Socialist League (RSL) was a Trotskyist group in the United States established in 1973 and disbanded in 1989.
The Hague Congress was the fifth congress of the International Workingmen's Association (IWA), held from 2–7 September 1872 in The Hague, the Netherlands.
The Social Democracy of the Kingdom of Poland and Lithuania, originally the Social Democracy of the Kingdom of Poland (SDKP), was a Marxist political party founded in 1893 and later served as an autonomous section of the Russian Social Democratic Labour Party. It later merged into the Communist Workers Party of Poland. Its most famous member was Rosa Luxemburg.
The French Turn was the name given to the entry between 1934 and 1936 of the French Trotskyists into the French Section of the Workers' International. The French Turn was repeated by Trotskyists in other countries during the 1930s.
The Socialist Party is a French centre-left and social-democratic political party. It holds pro-European views. The PS was for decades the largest party of the "French Left" and used to be one of the two major political parties in the French Fifth Republic, along with The Republicans. It replaced the earlier French Section of the Workers' International in 1969 and is currently led by First Secretary Olivier Faure. The PS is a member of the Party of European Socialists, Progressive Alliance and Socialist International.
The International Socialist Organization (ISO) was a Trotskyist group active primarily on college campuses in the United States that was founded in 1976 and dissolved in 2019. The organization held Leninist positions on imperialism and the role of a vanguard party. However, it did not believe that necessary conditions for a revolutionary party in the United States were met; ISO believed that it was preparing the ground for such a party. The organization held a Trotskyist critique of nominally socialist states, which it considered class societies. In contrast, the organization advocated the tradition of "socialism from below." as articulated by Hal Draper. Initially founded as a section of the International Socialist Tendency (IST), it was strongly influenced by the perspectives of Draper and Tony Cliff of the British Socialist Workers Party. It broke from the IST in 2001, but continued to exist as an independent organization for the next eighteen years. The organization advocated independence from the U.S. two-party system and sometimes supported electoral strategies by outside parties, especially the Green Party of the United States.
The Socialist Workers Party (SWP) is a far-left political party in the United Kingdom. Founded as the Socialist Review Group by supporters of Tony Cliff in 1950, it became the International Socialists in 1962 and the SWP in 1977. The party considers itself to be Trotskyist. Cliff and his followers criticised the Soviet Union and its satellites, calling them state capitalist rather than socialist countries.
James Patrick Cannon was an American Trotskyist and a leader of the Socialist Workers Party.
Nahuel Moreno was a Trotskyist leader from Argentina. Moreno was active in the Trotskyist movement from 1942 until his death.
Workers' Power is a Trotskyist group which forms the British section of the League for the Fifth International. The group publishes the newspaper Workers Power and distributes the English-language journal Fifth International.
The Second International (1889–1916) was an organisation of socialist and labour parties, formed on 14 July 1889 at two simultaneous Paris meetings in which delegations from twenty countries participated. The Second International continued the work of the dissolved First International, though excluding the powerful anarcho-syndicalist movement. While the international had initially declared its opposition to all warfare between European powers, most of the major European parties ultimately chose to support their respective states in World War I. After splitting into pro-Allied, pro-Central Powers, and antimilitarist factions, the international ceased to function. After the war, the remaining factions of the international went on to found the Labour and Socialist International, the International Working Union of Socialist Parties, and the Communist International.
The Socialist Workers Party (SWP) is a Trotskyist communist party in the United States. The SWP began as a group that was expelled from the Communist Party USA for supporting Leon Trotsky over Soviet leader Joseph Stalin.
