This isn't just a facebook thing, anyway as I said elsewhere, everything about this annoys me.
It annoys me that facebook didn't have the common sense to make sure it didn't become a story (e.g. the image should be in its db as a vital picture in a historical narrative)
It annoys me that everyone got so self righteous about it (oo we don't understand why it was taken down, you do, it's coz there's a terrified naked child whose been half burnt alive and if weren't for its hystorical significance you'd be outraged if it weren't taken down)
It annoys me facebook changed its mind (which doesn't surprise me as the initial responder is probably paid not to have opinions) and everyone is now self congratulatory about it (the change was inevitable - you didn't achieve anything)
Annoys me facebook didn't admit it has editorial responsibility, but that wont happen till a court tells them they do.
And it annoys me that if something like this were to happen today (the taking of a horrifying photo of a child that represents everything wrong with a nations behaviour) everyone would complain that it was too gruesome and they would have to draw a picture... if you were lucky... and it would need to be clothed... god just remember the outrage about the guy holding his kid in the shower. Or that spice person kissing her kid on the lips. Jesus christ.