Alright, I'll play devil's advocate here.
I read the link story; What it gives, is the genaralized story, from the authorities point of view.
We don't know what the kid might have said through the door; The kid might have said he had a gun, and tried to bluff his way out(My neighbor's kid has done that very same thing, to avoid a fight.)
We'll have to wait for the story to develop, and to hear what's said in the trial, before we make any judgement's.
The terrorism charge was just ****ing absurd, though.