John Reed, Benjamin Gitlow and other socialists were among those who formed the Communist Labor Party while socialist foreign sections led by Charles Ruthenberg formed the Communist Party. These two groups would be combined as the Communist Party of the United States of America (CPUSA). The Communists organized the Trade Union Unity League to compete with the AFL. By August 1919, only months after its founding, the Communist Party USA claimed 50,000 to 60,000 members. Members also included anarchists and other radical leftists. In contrast, the more moderate Socialist Party of America had 40,000 members. The sections of the Communist Party's International Workers Order meanwhile organized for communism along linguistic and ethnic lines, providing mutual aid and tailored cultural activities to an IWO membership that peaked at 200,000 at its height. (In 1928, following divisions inside the Soviet Union, Jay Lovestone, who had replaced Ruthenberg as general secretary of the CPUSA following his death, joined with William Z. Foster to expel Foster's former allies, James P. Cannon and Max Shachtman, who were followers of Leon Trotsky. Following another Soviet factional dispute, Lovestone and Gitlow were expelled and Earl Browder became party leader.)