A point to ponder, similar to the one made by the folks who jumped the 9/11 hijackers. There isn't any real point in passivity and obedience in the face of this sort of animal; you're going to die anyway so you might just as well take one of the bastards with you.
I know - the same thing occurred to me. But most of the adults were teachers, or moms - many with babies in their arms. Mothers can fight like tigers when their kids are threatened, but like the passengers in planes before 9/11, these women probably thought that they could "go along quietly" and live.
But that's not so any longer. We have to change our views - if someone is threatening to hold us hostage, we just have to mass together, mob them, and kill them, even if they *do* bring the roof down.
I am not a teacher, but most of the ones I do know abhor violence. Also, 20 terrorists that have automatic weapons and explosives in your face must be different than a arab with a box-cutter. If they told the adult male hostages to be still or the children would die then I would do it also.