The attacks on spectators at the Boston Marathon produced results so devastating as to enrage the conscience of all moral people.
Those who set out to kill and maim as many people as possible - at an elementary school, in office buildings, in a theater, at sports events - seek the world's attention and receive it.
But those who watched television last week were able to see especially clearly the failure of this selfish and cowardly choice.
Acts of selfishness, cowardice and ill will were overshadowed, in full view of the world, by acts of selflessness, bravery and generosity of spirit.
Massachusetts Gov. Deval Patrick put it very well, noting "the grace this tragedy exposed."
Terrorism failed to terrorize. It had instead the effect of putting goodness in the spotlight.
In the worldwide war for hearts and minds, that's no contest.
And it wasn't just in Boston, dealing with the effects of intended harm, that everyday good will received the attention it deserves and so often does not receive.