Bartolomé de las Casas
Fray Bartolomé de las Casas, O.P. (1474 or 1484–1566) was a Dominican friar. A former encomendero, he eventually opposed the system of forced labor in which he had participated. His works, including his famous Short Account of the Destruction of the Indies, denounced the treatment of indigenous peoples by European colonizers. After a failed attempt at the "peaceful colonization" of Venezuela, he entered the Dominican Order, returning to the Americas as a priest and eventually bishop among the Maya in Guatemala.