Again, I am not sure why you all think "Calling out the National Guard" is a panacea.
As someone who was in the Illinois Army Guard for a number of years, it's kind of a bad idea. National Guard only trains for 11 weekend drills and two weeks in the summer, or about 36 days of training a year. Of those 36 days, most units maybe get ONE day of "Civil Disturbance" training. It usually consists of how to stand in a formation with batons (which we never had enough of) and to move in formation and yell.
Now, one thing I remember from my CD training is a Major who said, "When you are out in the streets, those are not the enemy out there. They are your fellow citizens, they are damned upset about something and they have every right to be."
Keep in mind, those guys in the Guard come from the same communities that are upset about whatever they are on the street for.