Marcus Mosiah Garvey was once the most famous black man on earth. A brilliant orator who electrified his audiences, he inspired thousands to join his "Back to Africa" movement, aiming to create an independent homeland through Pan-African emigration--yet he was barred from the continent by colonial powers. This self-educated, poetry-writing aesthete was a shrewd promoter whose use of pageantry fired the imagination of his followers. At the pinnacle...