Named the Father of Harlem Radicalism, Hubert Henry Harrison was an African-American class-radical, race-radical, and anti-religion radical –a rare combination for the early Twentieth Century. At a time when most African-Americans supported the Republican Party, Harrison was working directly for Socialist causes like the Socialist Party (SP), American Federation of Labor (AFL), and the International Workers of the World (IWW). He later founded the Liberty League, and its newspaper, The Voice, as Black race conscious organizations that were more radical and farther to the political Left than similar contemporary organizations such as the NAACP. Both the Liberty League and The Voice would be the direct precursors of Marcus Garvey's Universal Negro Improvement Association (UNIA) and its newspaper, The Call.