What you see at the end is a man who was driving past, taking his children to a language class (it turns out) in a van, when he sees the final survivor crawling in the gutter. He stops to lift the dying man into the back of his van, and the soldiers open fire on him, kill him and wound his children. They then say 'it's their fault for bringing their kids into a battle'.
bbc story here
metafilter discussion here
Crooked Timber here
Respect to Youtube for not taking it down, and to wikileaks for sourcing it.