It sounds like these people know who shoved them in the Superdome without adequate security to protect them and facilities to sustain them. They also know that Nagin knew from experience exactly what would happen to them in there without enough security. I think it would be clear to anyone that he didn't really care about them or he would have worked harder to keep this from happening to them from the start.
That is a good point.
Plus he set up his new home in Texas, even enrolled his kids in school there.
Nagin makes Allstate look like Captain Kangaroo (in character)