I don't think you can.
I think I can.
Like #6 said, there were reports that Nagin had to order the tourists to the front of the line because they were being threatened with murder by a mob at the Super Dome.
Now, in a situation like that, what would you rather have? A little "unfairness?" Or people murdered simply because they happened to have the wrong skin color, or social status, for the mob?
Of course it's tough for the people who got bumped from the head of the line. I'd resent it too, if I were bumped. But I doubt any of the bumpees were killed.
He could have left them in the Hyatt, and cleared out people from the Dome who were suffering worse.