No one in the whole movie ever asks anyone, Did you write this letter' Part of the reason is that no one wants to hear that it isn't for them. As soon as they read it, they want it to be theirs.
The Americans may think they have 'liberated' Baghdad but the tens of thousands of thieves - they came in families and cruised the city in trucks and cars searching for booty - seem to have a different idea what liberation means.
Well of course there's been a great deal of progress over the last 40 years. We don't have laws that segregate black people within the society any longer.