The question then becomes WHEN were they refused access?
Because the police would also not allow people to LEAVE the superdome once the water level came up. They held them there, even when some wanted to try to wade out.
But they did allow chopper drops of food and water.
Timeing of these events are important to getting the big picture.
When there were thousands of people at the ThunderDome and at the Convention Center. And the state authorities were vocally complaining that the Fed relief effort was no good, and while Shep went histrionic. That's when.