It is collateral damage.
Ther has always been a very fine line between collateral damage and murder, and this case is far from clear.
One of the main issues is that when 2 sides are fighting, and one have an overwhelming force, and huge amount of technical superiority the other side simply cant compete, so it does not try to directly.
Guerilla warfare is the typical response, unfortunately Guerilla warfare often relies on using innocent people as human shields, this usually works to some degree. And nearly always works whenever cameras are around, this time we get to see the video, but not by a reporter, but by a helicopter gunship shooting at people who they "suspect" of being the enemy.
Now to some degree this method of "shoot first" has come under scrutiny, especially when many innocent people were killed.
One other point to add, this was not "fighting" in the traditional sense, this was quite simply assasination without all of the typical prescision and accurate descision making.
I was a case of, "that guy has a weapon" lets kill him, and anyone else around him, whether they have weapons or not, and then lets kill anyone who turns up to help.
The only people who dont seem to see the extreme wrongness of this entire incident so far are all American, and one was in the forces. You must recognise that although we generally like Americans, we cant, and never have been able to (so far) trust their armed forces (not to say that ours are or ever have been perfect), anyway back to the point. I suspect that some Americans think that I am somehow blaming "all" Americans for this incident, or them directly and personally - that is simply not the case, and is far from reality.
To expand my point, there are a lot of bad people in xxxxx place, why dont we just drop a nuke, sure there will be some "collateral damage" but at least we will get them. Obviously I have taken this point to the extreme, but some people simply cant see the difference between killing someone by accident, and this incident, where "everyone" in that area was a "target" they were marked for death by proximity, and it was deliberate, not an accident - this is why I found it sickening.