IMO...
Preparation is the key word for Katrina.
NGs, LEO, city officials should be on the alert on those days leading up to the storm. The forecast was emminent with Category 5 directly to the city. How clearly the message can it get?
Looting is a given when sh!t like this happens. But nothing was done on the first 3 days about it, so the looting became widespread like wild fire, assholes became braver
...and there are not enough LEOs to stop them...Shoot, LEOs and NGs have loved ones, too.
Hindsight is 20/20...But they should mobilize all NGs and LEOs into the city the minute the storm passed. Really, their presence is probably enough to cut down significant looting and keeping order as people moving out to safer places.
I guess the city officials are not prepared enough.