We live in an era in which the overwhelming majority of filmgoers will have no experience of military life whatsoever, either as veterans or relatives thereof. “Dunkirk,” a visually stunning film—overwhelming in IMAX— will not give those audience members the illusion that by having watched the film they understand what war is. They will be moved, I’m sure; this particular story cannot be anything but. But its very distance from the communal character of military experience marks it as a film of our time trying to reach back to another era, when military culture was more generally understood, and show us: see, this is what you no longer understand.
Is it a good movie? No, not if you want plots you can follow and visuals that don’t seem to be maiming themselves. (On the other hand, why would you?) But it’s greater and stranger than most conventionally good movies because of this bizarre thematic Möbius strip: Welles tried to make a personal artistic statement out of a B-movie thriller, and the thriller became the exact nightmare he was trying to make a statement about. In a way, the art was more self-aware than he was; it refused to stop being life. He had built the hall of mirrors, then found that he’d wandered into it. Audiences in 1948, when Columbia released the film in America, were not prepared for something this opulently broken. The movie flopped.
In 2005, The Lancet published a comprehensive review of the literature on media violence to date. The bottom line: The weight of the studies supports the position that exposure to media violence leads to aggression, desensitization toward violence and lack of sympathy for victims of violence, particularly in children.
In fact the surgeon general, the National Institute of Mental Health and multiple professional organizations — including the American Medical Association, the American Psychiatric Association and the American Psychological Association — all consider media violence exposure a risk factor for actual violence.
To be fair, some question whether the correlations are significant enough to justify considering media violence a substantial public health issue. And violent behavior is a complex issue with a host of other risk factors.
But although exposure to violent media isn’t the only or even the strongest risk factor for violence, it’s more easily modified than other risk factors (like being male or having a low socioeconomic status or low I.Q.).