There's a hard-core element backed by the Mexican government in California. Their objective is the "reconquista," the re-unification of California and the Southwest with Mexico. Unfortunately for them, most Mexicans want to live in the USA, not Mexico. So there's no real danger. Thirty years ago I watched as these professional agitators threw marbles under the feet of San Francisco police horses so the horses would fall. Fortunately, none did. Trump is a real gift to the Mexican government because he unites the rabble against the "arrogant gringo gabachos." Otherwise the rabble is sitting around grumbling about Mexican leadership.