Bartolomé de las Casas (1484-1566), the "Protector of the Indians," made a direct, persistent appeal to the Spanish Crown that reshaped colonial policy and moral discourse.
Abolish the encomienda system — the grant of Indigenous labor to Spanish colonists in exchange for "protection" and Christianization. In practice: forced labor, displacement, demographic collapse.
Grant freedom to enslaved Indigenous peoples. Recognize their full humanity, rationality, and souls — against arguments (e.g., Sepúlveda) that they were "natural slaves."
Legal victory: Encomienda legally dismantled (replaced by repartimiento — still forced labor).
Practical failure: Enforcement collapsed under colonial resistance. African slavery expanded to replace Indigenous labor.
Moral legacy: First systematic human rights advocacy in colonial context. Foundation for Indigenous rights theology and international law.
Las Casas asked the King for justice. He got laws. The empire got loopholes. The Indigenous got survival — barely.