The emergence of Haiti as a sovereign Black nation lit a beacon of hope for Black people throughout the African diaspora. Leslie M. Alexander’s study reveals the untold story of how free and enslaved Black people in the United States defended the young Caribbean nation from forces intent on maintaining slavery and white supremacy. Concentrating on Haiti’s place in the history of Black internationalism, Alexander illuminates the ways Haitian independence influenced Black thought and action in the United States. As she shows, Haiti embodied what whites feared most: Black revolution and Black victory. Thus inspired, Black activists in the United States embraced a common identity with Haiti’s people, forging the idea of a united struggle that merged the destinies of Haiti with their own striving for freedom. A bold exploration of Black internationalism’s origins, Fear of a Black Republic links the Haitian revolution to the global Black pursuit of liberation, justice, and social equality.