I'm going to show I can create a better conspiracy then the conspiritards.

"Hey, we need you to help us crash airliners into the WTC and kill several thousand people to further our agenda."

"WTF?  Dude...is this a joke?  Go @#$^ yourself."

"Hey, we want you to help us orchestrate shooting some kindergartners to get control in place."

"What kind of #@$ing monster are you?  Seriously."

"Hey, we want to set off a couple of bombs at the Boston Marathon, so we can get the drone program and RFID in place.  If we do it right, it shouldn't hurt many people, though of course, collaterals are possible.  Just some nice loud distractions at the end.  That way, any large gathering will be a just target for drones, scans and otherwise. Overall, this will mean less real attacks.  The cost benefit is positive."

"Makes sense.  Okay, I'll help."

BANG!

"Dude!  WTF?  That actually killed and maimed a lot of people!  You said that wasn't going to happen."

"Well, it had to be big enough to get people's attention."

"That's not what I signed on for.  I'll tell..."

"Who, exactly?  Even if you managed to tie us in, you're complicit and the mob would kill you.  And you carried the bombs, so you're the logical suspect. We're all high-ranking officials with excellent cover.  Best keep your mouth shut if you know what's good for you."

"!@#$&!"

"Yeah, whatever.  Remember, we need drones, RFID and better monitoring of the internet.  Even if you blame this on the Muslims."

~~~

I don't believe it, but this one would at least be feasible.

In reality, this is going to come down to:

RIFs who have learned to scale their attacks and keep quiet about them, lest the US military show up and sodomize them with JDAMs, or some native crazy who hates something or other.  If the latter, given the target, I expect it's some anti-capitalist lefty.