New Orleans ? Clarence Rodriguez has ripped up the water-buckled floor tiles and is hard at work scraping mold off the walls of his home in the mostly black and impoverished Ninth Ward. But as for his neighbors, many have gathered up their belongings and left, with no intention of returning.

And that worries Rodriguez and others.

They worry that many poor, black residents of this hurricane-ravaged city simply cannot afford to come back. They worry, too, that the politicians, urban planners and developers responsible for the rebuilding of New Orleans will neglect to leave room for the poor in their master plan.

Worse, they fear civic leaders will see the disaster as a glorious opportunity to try to engineer poverty out of the city altogether.

In short, they worry that Hurricane Katrina will prove to be the biggest, most brutal urban-renewal project black America has ever seen.

The fears are far from unfounded. Tens of thousands of flooded-out homes are slated for demolition, many of them in the hard-hit Ninth Ward. And many of the thousands of evacuees scattered around the country are already starting new lives where they are.

Housing and Urban Development Secretary Alphonso Jackson told The Houston Chronicle: “Whether we like it or not, New Orleans is not going to be 500,000 people for a long time. … New Orleans is not going to be as black as it was for a long time, if ever again.”

“As a practical matter, these poor folks don’t have the resources to go back to our city just like they didn’t have the resources to get out of our city,” said Joseph Canizaro, once one of the city’s biggest developers and a member of New Orleans’ rebuilding commission. “So we won’t get all those folks back. That’s just a fact. It’s not what I want, it’s just a fact.”

Before the flood, New Orleans was a city of a half-million people, 67 percent of them black, and it had the second-highest concentration of poverty, at 18.4 percent, of any major American metropolitan area.

For decades, New Orleans had been losing population (142,000 from 1960 to 2000) and wealth (just over half its property value between 1950 and 1998), while it saw an increase in crime and the flight of jobs, money and whites to the suburbs.

Many now see a once-in-a-lifetime opportunity to remake a major American city.

Some civic leaders want to see New Orleans rebuilt so as to narrow the gap between the have and the have-nots, better integrate the city racially, and embrace the poor black residents who gave the city much of its identity, including its food, its music and its celebrated street life.

“If you’re talking about building a city, you’ve got to create a place for everybody. This city doesn’t just belong to rich white folk, and it doesn’t belong to poor black folk,” said Barbara Major, who runs the St. Thomas Health Clinic, working with poor from across the city.

Suspicions run deep, however. “I’ve heard conversations – some by good people, some by evil people – those who would leave the poor out,” said former Louisiana Gov. Buddy Roemer, who nevertheless believes that “New Orleans’ goodness and decency” will win out.