Percentage of New Orleans residents living below the poverty level in 2003: 20.8
Rank of New Orleans among the American cities with the highest rate of poverty: 17
Ratio of African-American households in New Orleans that did not have access to a car in 2000: 1 to 3
Percentage of evacuees in Houston shelters who had not heard about the evacuation order before the hurricane hit: 25
The rest is at the link.