Question: Which early leader of the Haitian Revolution conducted a secret ceremony during which the first major slave insurrection was planned in 1791?
Sentence (from "United States and the Haitian Revolution"): In June 1793 when the Haitian people, led by Toussaint Louverture, overthrew the French colonial rule and declared themselves an independent colony, it made the neighboring United States uneasy.
Relevant evidence: No