I know explaining this all isn't necessary to any remotely moral/logically thinking individuals, but here it is anyway... Warfare in the Colonial era consisted of men with rifles marching towards each other on a battlefield. The stupidity of this form of combat at least prevented massive indiscriminate civilians casualties (at least, unintentional ones.)
Now that we live in an era of asymmetrical warfare, it's not wise-–or legal or moral––to fire into crowds of civilians in hopes of killing a terrorist. There appear to be children in Asay's drawing and the takeaway for the reader is that it's somehow horrible to consider their lives. Hearts and minds, Chuck. We're supposed to win them over, not splatter them.