The catastrophe started at Bois Caiman in 1791, and it hasn't let up since.
The final murder of the whites in 1805 created a polity born in slaughter and appeals to heathen gods, and the fundamentals have never changed.
"Voodoo prevailed despite the whites’ efforts, nurtured in secret by the colony’s first slaves. During European colonialism and the Haitian revolution Voodoo played a singular role for slaves...Voodoo today is still a significant part of most Haitians’ daily lives. A Haitian woman in the 20th century said that “The loa love us, protect us and watch over us. They show us what is happening to our relatives living far away, and they tell us what medicines will do us good when we are sick.” (Brown University)