A radical faction of Democrats called the Partido del Ejercito de los Pobres ("Los Pepes") takes over the state government in wildly rigged elections. (Ya gotta love those touch screen voting machines!)
After "Solo Espanol" their first new laws are for "land reform," confiscatory taxes on any properties over 1,000 acres. The wildly popular and controversial Gobenador Camacho is assassinated by a displaced 5th generation Anglo rancher, and the state erupts in Kosovo-style ethnic civil war.
The federal government is too busy fighting the wars in the middle east and keeping the peace in riot-torn L.A. and Chicago to do much about a low level civil war in Nuevo Mexico.
Anyway, that's the background of "Domestic Enemies."