It isn't Osama who will be blamed by the survivors. It's the US.
I don't doubt that. But my point stands: When someone hides among non-combattants, and goes out of his way to make himself indistinguishable from non-combatants, he should shoulder the blame when non-combattants inevitably get hurt.
However (here's where propaganda comes in) when the non-combatants have been told by their state-sponsored media that the people in their midst are freedom fighters -- or whatever the local term is -- they have blamed the foe even before the retaliation.
To see it from the other side, there have been monuments built and legends told of the heroic people who hid resistance fighters during WWII. When the Nazis came in and killed not only the resistance fighters but also those who housed them, would we expect the "non-combattants" to blame the resistance?
Of course not. The point is, anyone who knowingly and willingly harbors a combattant has already made up their mind about who is right or wrong. They have chosen a side and taken part. (Damn, I'm agreeing with Bush.)