Proletarian internationalism

Proletarian internationalism is the political principle that workers across national borders share class interests and should unite in struggle against capitalism.

Communist Manifesto: A political pamphlet written by Karl Marx and Friedrich Engels and published in 1848. Its closing call for workers of all countries to unite became the principle’s most famous formulation.
Class consciousness: Awareness of a social class's shared position, interests, and capacity for collective action. Recognizing common class interests is the basis for solidarity across national identities.
Social patriotism: The support of socialist parties for their own governments during international conflicts, especially World War I. Its wartime rise showed national allegiance overriding international working-class solidarity.
Zimmerwald Conference: A 1915 gathering of socialist opponents of World War I held in the Swiss village of Zimmerwald. Its antiwar delegates tried to restore international solidarity after socialist parties backed national war efforts.
Internationalism: A political outlook that promotes cooperation or solidarity across national boundaries. Proletarian internationalism is a class-centered form of this broader political outlook.
First International: The International Workingmen’s Association, founded in London in 1864 to coordinate labor and socialist organizations. It gave cross-border working-class cooperation an organized institutional form.
Trade union internationalism: Cross-border cooperation among trade unions to coordinate labor campaigns and defend workers' interests. Unions can turn international solidarity into practical coordination around wages and working conditions.
Nationalism: A political principle that gives priority to the identity, interests, or sovereignty of a nation. It can divide workers by nation where proletarian internationalism emphasizes shared class interests.
October Revolution: The 1917 Bolshevik-led seizure of power in Russia that established the first Soviet government. Its leaders presented the revolution as a beginning of international socialist transformation.
National self-determination: The principle that a people should determine its own political status and form of government. Movements must reconcile workers’ cross-border unity with peoples’ claims to national autonomy.

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