This is being ginned up big time by the usual suspects.
Our enemies are practicing various tactics.
Remember last year when a lot of flash mobs appeared and robbed stores?
Remember the OWS crowds in many major cities?
Now see how national outrage can be ginned up over a small incident which may quite likely be justified self-defense?
All of these tactics can be useful if the Power Elite need a crisis either leading up to a November election, or perhaps a crisis subsequent to a heart-breaking Nov election loss.
The political manipulators need to make sure they know how the buttons can be pushed. They are testing the machine.