 In Peru, power struggles between conquistadors and the viceroy became an open civil war in which the conquistadors led by Gonzalo Pizarro rebelled against the New Laws and defeated and executed the viceroy Blasco Núñez Vela in 1546.The emperor sent Pedro de la Gasca, a friend of Las Casas, to reinstate the rule of law, and he in turn defeated Pizarro.To restabilize the political situation the encomenderos started pushing not only for the repeal of the New Laws, but for turning the encomiendas into perpetual patrimony of the encomenderos – the worst possible outcome from Las Casas's point of view.