The quick shot in the cafeteria of a kid sitting along and staring off into the distance as he eats chips (or something) kills me.

Also, the small part w/Evan playing the video game.
*paraphrased horribly*
"See this? You know why I'm killing these guys? 'Cause they're TERRORISTS. You don't negotiate with terrorists."
*dies*
"Fuck...why even play this game when you can't even win?"