A person’s reaction to Katrina seems to vary in direct proportion to their average daily time spent with people. The more time with people, the more likely one will see it as a human problem, either with Bush or the N.O. Residents. The less time one spends with people, the more likely to see it as an engineering (both physical and social) problem.
Oddly, I’ve been hearing the idea that we should not rebuild New Orleans (at least nowhere near as it was) from some surprising quarters, including me. For a good summation of the main argument, see Josh Trevino’s article.
For more literal reactions, see the Agitator’s post on what WalMart has done so far. It’s quite staggering. The business community has done a great deal already.