Poverty Caused the Katrina Disaster

Here's another article from the Houston Chronicle giving facts about the folks hardest hit by Katrina. Consider this fact from the article:

One of the worst-hit neighborhoods in the heart of New Orleans, for example, had a median household income of less than $7,500. Nearly three of every four residents fell below the poverty line, and barely 1 in 3 people had a car.

Poverty is the disaster. Katrina was just an event that brought it to attention.