Just as in the Middle East, the government would demand Rules of Engagement so that the National Guard could not win, only die trying.
Snipers from the nearby ghetto used to try to pick off the guards at the Hunter's Point Naval Shipyard in California. Political Correctness demands that this not be noticed.
"God is the name by which I designate all things which cross my path violently and recklessly, all things which alter my plans and intentions, and change the course of my life, for better or for worse."
-C G Jung
Daley wiped out Gangster City a few decades ago, didn't need the NG for that, did he? I'm telling you something nefarious is in the works, and no this isn't a conspiracy theory.
No further evidence is needed to keep the NG from this type of action than the Kent State Massacre. (notice the period at the end of that sentence.)