If you haven’t yet seen confirmation from AP that there were Hamas fighters in the school in Gaza, this is what they reported:
“Two neighbourhood residents confirmed the Israeli account, saying a group of militants fired mortars from a street near the school, then fled into a crowd of people in the streets. Israel then opened fire.”
You can read the whole article here. The report is not pretty, the tragedy of innocent casualties is just as tragic but the context is also important.
Incidentally, the Israel army has a YouTube site with officially released footage amongst which is this footage taken from an unmanned drone of mortar fire from a UN school.
We have fire-power, they have tear-power. Hamas cannot defeat Israel by fighting, but they can defeat us by the power of the press and world opinion. Civilians who die in the conflict are martyrs who will go to heaven. A culture and an organization that thrives on suicide bombers and death has no problem with a few more dead children. But they know the West does.