 All in all, modern historians tend to disregard the numerical figures given by Las Casas, but they maintain that his general picture of a violent and abusive conquest represented reality.One persistent point of criticism has been Las Casas's repeated suggestions of replacing Indian with African slave labor.Even though he repented that position later in his life and included an apology in his "History of the Indies", some later criticism held him responsible for the institution of the Atlantic slave trade.