I like it. Cool take on the "it takes a good guy with a gun to stop a bad guy with a gun" and plays on the media's narrative about "lone wolf" attacks.
They keep calling these nutbags "lone wolf" attackers and say that they aren't acting under direct guidance/contact of any group. I don't know why it is so hard for so many to grasp that this is PRECISELY what makes them that much more so dangerous. The groups put out a call for action and these loonies hear it and act without direct support. No money, no guns, no lawyers, no centralized leadership, no real plan necessary, no specific target location.
Big Brother can't be everywhere all the time. There is no way to guard against this type of war except for people to step up with the means and determination to protect themselves and what is important to them.