Once, while I was waiting to watch the news, I remember several ads that were playing. There was nothing remarkable in this, by itself; ads are part of the daily bombardment of modern society. What got my attention this time, however, was that one ad was about a video game, and the narrator mentioned right from the start: “Rated for Teenagers.” I then saw image after image of men in body armor shooting other men in body armor, of explosion after explosion.