"A short time later a van arrives to pick up the wounded and the pilots open fire on it, wounding two children inside. “Well, it’s their fault for bringing their kids into a battle,” one pilot says."

Rules of engagement.
The argument's now over whether this was a "righteous kill" but focusing on one event is counterproductive, especially since events like this happened in every war liberals have ever defended. The fact remains that this is not a righteous war. That's the crime.
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And again

The whole fucking mess is stupid. Just a waste.