I got a heads-up on this article from Erica Ford (who has no web site for me to link to). 

Quote of note:

As hurricane Katrina approached, our Governor urged us to "Pray the hurricane down" to a level two. Trapped in a building two days after the hurricane, we tuned our battery-operated radio into local radio and tv stations, hoping for vital news, and were told that our governor had called for a day of prayer. As rumors and panic began to rule, they was no source of solid dependable information. Tuesday night, politicians and reporters said the water level would rise another 12 feet - instead it stabilized. Rumors spread like wildfire, and the politicians and media only made it worse.

...To understand the dimensions of this tragedy, its important to look at New Orleans itself.

For those who have not lived in New Orleans, you have missed a incredible, glorious, vital, city. A place with a culture and energy unlike anywhere else in the world. A 70% African-American city where resistance to white supremacy has supported a generous, subversive and unique culture of vivid beauty. From jazz, blues and hiphop, to secondlines, Mardi Gras Indians, Parades, Beads, Jazz Funerals, and red beans and rice on Monday nights, New Orleans is a place of art and music and dance and sexuality and liberation unlike anywhere else in the world.

It is a city of kindness and hospitality, where walking down the block can take two hours because you stop and talk to someone on every porch, and where a community pulls together when someone is in need. It is a city of extended families and social networks filling the gaps left by city, state and federal governments that have abdicated their responsibility for the public welfare. It is a city where someone you walk past on the street not only asks how you are, they wait for an answer.

It is also a city of exploitation and segregation and fear. The city of New Orleans has a population of just over 500,000 and was expecting 300 murders this year, most of them centered on just a few, overwhelmingly black, neighborhoods. Police have been quoted as saying that they don't need to search out the perpetrators, because usually a few days after a shooting, the attacker is shot in revenge.

There is an atmosphere of intense hostility and distrust between much of Black New Orleans and the N.O. Police Department. In recent months, officers have been accused of everything from drug running to corruption to theft. In separate incidents, two New Orleans police officers were recently charged with rape (while in uniform), and there have been several high profile police killings of unarmed youth, including the murder of Jenard Thomas, which has inspired ongoing weekly protests for several months.

The city has a 40% illiteracy rate, and over 50% of black ninth graders will not graduate in four years. Louisiana spends on average $4,724 per child's education and ranks 48th in the country for lowest teacher salaries. The equivalent of more than two classrooms of young people drop out of Louisiana schools every day and about 50,000 students are absent from school on any given day. Far too many young black men from New Orleans end up enslaved in Angola Prison, a former slave plantation where inmates still do manual farm labor, and over 90% of inmates eventually die in the prison. It is a city where industry has left, and most remaining jobs are are low-paying, transient, insecure jobs in the service economy.

Race has always been the undercurrent of Louisiana politics. This disaster is one that was constructed out of racism, neglect and incompetence.
Hurricane Katrina was the inevitable spark igniting the gasoline of cruelty and corruption. From the neighborhoods left most at risk, to the treatment of the refugees to the the media portrayal of the victims, this disaster is shaped by race.