What they're trying to hide
I asked a rhetorical question below in "Time to Start Screaming", to wit: what are you trying to hide?
For what it's worth, I have a pretty good idea what they're trying to hide, and why.
First, they're trying to hide the number of people who survived the hurricane and flood and died of neglect (dehydration, lack of prescriptions, disease, violence) while waiting for help to arrive. In the coming days, look for the administration to try to keep a lid on the cause of dead of the upcoming horrendous bodycount.
Our press will not be doing their jobs if they accept raw numbers without a breakdown (killed in collapsed building, drowned in attic, drowned on streets, died on rooftop awaiting help, etc).
They're also trying to prevent us actually seeing what went down. Because words and images process differently. If you recall, the mere facts of what went on at Abu Ghraib had been in the news for months before the photos came out. But it was the photos, of American soldiers goofing over dead bodies and holding prisoners on leashes, that caused the opposition to the adminstration's nifty little war to get a new lease on life.
If photos of prisoners being debased can cause such negative fallout, what do you suppose photos of dead grannies and babies, who died after the flood but before help arrived, are going to do?