He’s called “El Abuelo,” the grandfather, but make no mistake: Juan José Farías Álvarez is neither benign nor a relic. Born on August 10, 1970, in Tepalcatepec, Michoacán, this once-agrarian local evolved into one of Mexico’s most controversial narco figures. His story is one of rural resistance, cartel politics, splinter wars, and a criminal empire…