A small war broke out between Tuxtla Gutiérrez and San Cristobal in 1911. San Cristóbal, allied with San Juan Chamula, tried to regain the state's capital but the effort failed. San Cristóbal de las Casas, which had a very limited budget, to the extent that it had to ally with San Juan Chamula challenged Tuxtla Gutierrez which, with only a small ragtag army overwhelmingly defeated the army helped by chamulas from San Cristóbal. There were three years of peace after that until troops allied with the "First Chief" of the revolutionary Constitutionalist forces, Venustiano Carranza, entered in 1914 taking over the government, with the aim of imposing the "Ley de Obreros" (Workers' Law) to address injustices against the state's mostly indigenous workers. Conservatives responded violently months later when they were certain the Carranza forces would take their lands. This was mostly by way of guerrilla actions headed by farm owners who called themselves the "Mapaches". This action continued for six years, until President Carranza was assassinated in 1920 and revolutionary general Álvaro Obregón became president of Mexico. This allowed the Mapaches to gain political power in the state and effectively stop many of the social reforms occurring in other parts of Mexico.