Let's be real - Homeland Security is very busy tracking and
demonizing law abiding American citizens. They don't have time
to keep track of every muslim terrorist wanna-be.
That’s a keeper.
Oh, well in that case it makes a lot of sense. You see the "muslim terrorist wanna-be" is not a threat to our overlords, only to mere citizens, whereas the [armed] citizen is a threat to the overlord. It's a win-win situation for them: the terrorists kill people that they consider a threat and, likely, the people will clamor for more restriction on their liberties... or at least not complain as much when so restricted.
[/cynic]