What will happen, once the security is guaranteed against the next level 5 hurricane, is thay many old neighborhoods will becaome gentrified. Blacks won't rebuild, they don't have to; the government is supposed to take care of them. The rebuilding will be done by Mexican who will rebuild and stay.
The helpless, passive blacks will vote as the dems tell them, the Mexicans won't. So, maybe, Katrina has flushed a filthy dem stronghold and will turn it into a much less corrupt city.
Well, well, a silver lining in all this gloom and doom! You're probably right on all counts.