If lesson #1 from Katrina was that the press royally screwed up the coverage and badly misreported what happened, lesson #2 should be that the police were watching the bad press coverage, believed it, and went totally bonkers. And that's putting it politely.
After all, how else do you explain the need to steal Cadillacs to use as patrol cars. Or to go shoe looting, er, shopping. Or to suddenly decide we don't have a second amendment which applies......
Please do link to the vids below. The article is horrific.
Bus Error: Lesson #2 From Katrina: Run from the Police