These penitential thoughts are inspired by the charge brought against Dzhokhar Tsarnaev, the surviving brother of the two young Chechen-Americans who detonated two pressure cookers stuffed with explosives and ball-bearings at the Boston Marathon, killing three and wounding several hundred. It was a wicked deed that brought great sorrow to many families - but are pressure cookers really weapons of mass destruction?
The US Department of Justice thinks so. On April 22 it charged the 19-year-old Tsarnaev with "using and conspiring to use a weapon of mass destruction against persons and property". Not a nuclear weapon, or poison gas, or some filthy plague, but a homemade bomb that killed three people.
The US federal government's definition of a "weapon of mass destruction", it turns out, covers almost any explosive device, specifically including bombs, grenades, mines, and small rockets and missiles.
Of course, American bombs, grenades, mines and small rockets and missiles are not "weapons of mass destruction". That would be unthinkable. Otherwise we would have to accept that President Barack Obama signs off on the use of drone-delivered weapons of mass destruction almost every morning.
What's really going on here is just another manifestation of what Americans themselves call "American exceptionalism". In this context, it means killing Americans, especially for political reasons, is a special crime that calls for special terms and special punishment. It's the same logic that has been used to justify imprisoning people indefinitely without trial and even torturing them in the endless "war on terror".
Don't get too excited about it. One of the things that makes Americans completely unexceptional is they are playing the same games with words and meanings that every great power has used to justify its actions since the dawn of time.
Gwynne Dyer is an independent journalist whose articles are published in 45 countries.