Socialist Propaganda League(redirected from W. B. of Upton Park)
Socialist Propaganda League
a socialist organization in the USA. It was founded in 1915 in Boston on the initiative of American internationalists and political émigrés, headed by the Dutch émigré S. Rutgers. The league’s position on the question of the imperialist war was close to that of the Zimmerwald left. Revolutionary elements from the Socialist Party of America began to group around the Socialist Propaganda League. After the victory of the Great October Socialist Revolution in Russia, the league came out in support of the young Soviet republic, conducting socialist propaganda in trade-union organizations. In 1918 the league joined the left wing of the Socialist Party of America.