August 6 usually doesn't make headlines in America. But mark the day by what absence demonstrates: On the 72nd anniversary of the nuclear destruction of Hiroshima and some 140,000 non-combatants, there is no call for reflection in the United States.

In an era when pundits routinely worry about America's loss of moral standing because of an offish, ill-mannered president, the only nation in history to employ a weapon of mass destruction on an epic scale, against an undefended civilian population, otherwise shrugs off the significance of an act of immorality.

But it is August 6, and so let us talk about Hiroshima.

Beyond the destruction lies the myth of the atomic bombings, the post-war creation of a mass memory of things that did not happen. This myth has become the underpinning of American war policy ever since, and carries forward the horrors of Hiroshima as generations of the August 6 anniversary pass.