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date: 15 December 2017

Summary and Keywords

Radicalism in the United States since 1945 has been varied, complex, and often fragmented, making it difficult to analyze as a coherent movement. Communist and pro-Soviet organizations remained active after World War II, but a proliferation of noncommunist groups in the 1940s and 1950s, formed by those disillusioned by Marxist theory or the Soviet Union, began to chart a new course for the American Left. Eschewing much of the previous focus on labor, the proletariat, and Marxist doctrine, American postwar radical organizations realigned around humanist values, moral action, democracy, and even religion, with tenuous connections to Marxism, if any. The parameters of postwar radical moral theory were not always clearly defined, and questions of strategy and vision caused frequent divisions among activists. Nonetheless, claims of individual dignity and freedom continued to frame left radicalism into the late 20th century, emphasizing identity politics, community-building initiatives, and cultural expression in the streets of U.S. cities and the halls of academia. The presidential campaign of Bernie Sanders in 2016 helped revitalize leftist rhetoric on the national stage with its calls for racial and economic equality on moral terms.

Keywords: American Left, postwar radicalism, socialism, communism, anticommunism, Red Scare, Old Left, New Left, Civil Rights movement, Marxism

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