This article examines the constructions of Black “degeneracy” through which white Americans rationalized Jim Crow terror. Ruminations on African Americans’ supposed downward trajectory, I argue, drew relational meaning from a range of colonial discourses. Claims that African Americans were deteriorating outside the bonds of enslavement were articulated within wider transnational imperialist discourses circulating in this period that imagined that the world's savage peoples were destined to recede in the march of civilization. Here, I examine white Americans’ narratives of African American degeneration through two other imagined hemispheric encounters between white civilization and savagery. In the article's first half, I consider images of Haiti employed in cultural and political texts to signify the durability of innate Black savagery and the apocalyptic potential of Black freedom. In the second half, I consider discourses of Black degeneration in freedom alongside the genocidal construction of the “vanishing Indian.” I focus on two memorial projects: the 1931 monument to the Faithful Slave erected in Harpers Ferry and the never-completed National American Indian Memorial, for which ground was broken in 1913 at Fort Wadsworth.