This talk explores the political life of the journalist, activist, and educator Hubert Henry Harrison (1883-1927), who generated an array of visionary solutions to the systemic injustices of his day. Harrison blazed a trail for Black workers and organizers in the Socialist Party of America. He then emerged as the most prominent Black freethinker and free lover of his generation. Most spectacularly, Harrison's Liberty League of Negro Americans catalyzed the rise of Marcus Garvey and the largest international organization of African people in modern history. Because of his fearless radicalism, however, the full scope of Harrison's revolutionary legacy has been largely erased from popular memory. Until now.