The moral justification for violent revolution in the Haitian revolution

Without a violent revolutionary upheaval, it's unlikely that the French would have withdrawn from the colony of Sandomang and allowed their former slaves to create an independent republic for themselves. Although other imperial powers successfully abolished slavery and gained independence without a revolution, it's questionable whether they would have done so without the experience of the Haitian revolution. Ultimately, the moral component of allowing a person held in slavery to commit violence to free themselves cannot be ruled out. Enslavement is morally intolerable, and any tool a slave might use to free themselves, including killing their master, is justified.