Socialist Workers' Sport International

Socialist Workers' Sport International (German: Sozialistische Arbeitersport Internationale, SASI) was an international socialist sporting organisation, based in Lucerne. It was founded in 1920, and consisted of six national federations (with a combined membership of about one million) at the time of its foundation. Initially it was known as International Association for Sports and Physical Culture. Informally it was known as the Lucerne Sport International. It adopted the name SASI in 1926. The Austro-Marxist Julius Deutsch was the president of SASI.

International Labour Sports Federation (CSIT) was established in 1946 as the successor of SASI.

An international meeting of workers sports associations had been held in Ghent, Belgium, in 1913. However, the First World War put the build-up of an international workers' sport organisation on hold. After the war two Belgians, Gaston Bridoux and Jules Devlieger, took initiative to revive the cooperation. Preparatory meetings were held in Seraing, Belgium in 1919 and in Paris, France, during Easter 1920. The founding congress of the international took place in Lucerne September 13-September 14, 1920. During the foundation, the French and Belgian delegations urged that the word 'Socialist' be omitted from the name of the organisation, in order to attract a broader following.

The organisation upheld a policy of neutrality towards party organisations, a policy inherited from the German workers' sports movement (which tried to steer away from the fractional conflicts between the German socialists). This policy was however challenged by the communists, which claimed that the workers' sport movement could not abstain from taking part in revolutionary struggle. In 1921, the third congress of the Communist International decided to form a parallel sport international. In August 1921, the Sportintern was founded. Sportintern launched fierce political attacks against the Lucerne international. Its Czechoslovak section had suffered a split in July 1921, as the communists deserted it.

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