How many deaths does it take 'til we know that too many people have died

Speaking of anti-war songs (see the Fonda post, below), I found myself humming "how many deaths does it take 'til we know that too many people have died" as I was reading this LA Times story, Shots to the Heart of Iraq (thanks, Buzzflash). The story is about the increasing number of innocent Iraqi civilians who have been shot by jumpy US troops.
The answer, my friend, is that too many people have already died in Iraq.