The question that I've been wondering for a week now, is why didn't the people in New Orleans just walk out of the city? If you look at the Google satelite image from August 31st, there's the flooded area (A), the Super Dome (B), the border between where the levee broke and didn't break (C) and then an obvious large neighborhood of dry land (D). I kept on thinking of myself in that situation in the Super Dome and thinking, "hell, I would've just walked out... It couldn't have taken more than a day to get out where the Safeways are still open.
But Tim Bray just linked to this first hand account of tourists trying to get out of the city, which answers that question and a lot more. A snippet:
As we approached the bridge, armed Gretna sheriffs formed a line across the foot of the bridge. Before we were close enough to speak, they began firing their weapons over our heads. This sent the crowd fleeing in various directions. As the crowd scattered and dissipated, a few of us inched forward and managed to engage some of the sheriffs in conversation. We told them of our conversation with the police commander and of the commander's assurances. The sheriffs informed us there were no buses waiting. The commander had lied to us to get us to move.
We questioned why we couldn't cross the bridge anyway, especially as there was little traffic on the 6-lane highway. They responded that the West Bank was not going to become New Orleans and there would be no Superdomes in their City. These were code words for if you are poor and black, you are not crossing the Mississippi River and you were not getting out of New Orleans.
Our small group retreated back down Highway 90 to seek shelter from the rain under an overpass. We debated our options and in the end decided to build an encampment in the middle of the Ponchartrain Expressway on the center divide, between the O'Keefe and Tchoupitoulas exits. We reasoned we would be visible to everyone, we would have some security being on an elevated freeway and we could wait and watch for the arrival of the yet to be seen buses.
All day long, we saw other families, individuals and groups make the same trip up the incline in an attempt to cross the bridge, only to be turned away. Some chased away with gunfire, others simply told no, others to be verbally berated and humiliated. Thousands of New Orleaners were prevented and prohibited from self-evacuating the City on foot. Meanwhile, the only two City shelters sank further into squalor and disrepair. The only way across the bridge was by vehicle. We saw workers stealing trucks, buses, moving vans, semi-trucks and any car that could be hotwired. All were packed with people trying to escape the misery New Orleans had become.
Bastards. (Actually, the bridge they were trying to cross was a lot closer.)