We tend to think the problem is human beings have this natural tendency to kill, and yet in the middle of a hot war, WWII, a "good war," as it were, the US army was astonished to learn that at least three out of every four riflemen who were trained to kill and commanded to kill, could not bring themselves to pull the trigger when they could see the person they were ordered to kill. And that inner resistance to violence is a well kept secret.
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