Sozialistischer Deutscher Studentenbund

The Sozialistische Deutsche Studentenbund — the Socialist German Student Union or Socialist German Student League — was founded in 1946 in Hamburg, Germany, as the collegiate branch of the Social Democratic Party of Germany (SPD). In the 1950s tensions between the SDS and the main party surfaced, particularly over the party's support of West Germany's rearming, until in 1961 the SPD expelled all members of the SDS from the party.

After its exclusion from the parent organization, the SDS became the leading element in the Außerparlamentarische Opposition (APO; "Extraparliamentary Opposition"), that became active when the SPD and Christian Democratic Union formed a grand coalition which left Germany without a strong opposition inside parliament, since those two parties traditionally opposed each other. It consisted mainly of college and university students. The SDS opposed the Vietnam War and Germany's political involvement in it, as well as the use of nuclear weapons, and objected that many former Nazis still held influential positions in Germany. They also wanted to advance democratic structures in all institutions, for example in school.

Alternative lifestyles and more tolerance for same-sex couples, a more open treatment of sexual topics, the right to abortion and equal rights for women are also associated with the APO, and the SDS as its best known representative. The students involved used the same methods of protest as the anti-war movement in the United States at that time, for example sit-ins and demonstrations. The student movement reached its height in 1968 (its membership peaked at 2,500 at that time), after that the influence of the SDS declined. In 1970 it disbanded. A resurrection of the SDS in 1988 proved of no importance.

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