Two birds with one stone. A race war is coming, and LaRaza and flash mobs are only the precursor.
Cops are on the Other side, standing shoulder to shoulder with their LaRaza comrades. The Sheriff Of Nottingham's Men, in blue, nicely armored, lots of goodies that they carry with them, and, until they wise up and start parading in groups for safety. That's when IEDs start to appear.
Who pays the Army? How many will just follow orders? (There is precedent on this. Look at the Bonus Army fiasco).