Most likely another moment of DC's unending "urban youth" crime occurring, or another moment of 2nd Amendment exceptionalism erupting and some zombiefied stockpiler has decided his moment in the spotlight is now to "teach the gummint a lesson!". Or terrorists maybe but, compared to the other too, terrorism actually remains a very rare occurrence.
We should get some kind of betting pool going when these things happen, like Over/Under at the lotto booth or something. X-axis is number of victims (wOOt! high score!) and Y-axis is motivation. Whoever wins gets to leave work early and go home for a nap.
