In drone "warfare," a person sitting in a comfortable office in Washington, D.C. exterminates a family by remote control. Those killed never see it coming, and there is certainly no way for them to fight back. As for the guy in the office building, no danger there!
Supposedly, America's innovative move to drone warfare is a a way to minimize loss of life, but if the use of drones to execute people is justified by its relationship to a "war" (a "war on terror," presumably), it seems obvious that the only way for the other side to be engaged in the war, too, is for that side to find ways to kill their opponents (Americans) by stealth and without warning. Hence: the Boston Marathon massacre.
Postscript: In searching for an image to accompany this post, I happened on an article by Robert Wright, written in April 2013. He makes pretty much the same point, though from a different perspective, and his article is worth reading.
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