Why no mention of race or class in TV's Katrina coverage?

"But we aren't one united race, we aren't one united class, and Katrina didn't hit all folks equally. By failing to acknowledge upfront that black New Orleanians--and perhaps black Mississippians--suffered more from Katrina than whites, the TV talkers may escape potential accusations that they're racist. But by ignoring race and class, they boot the journalistic opportunity to bring attention to the disenfranchisement of a whole definable segment of the population. What I wouldn't pay to hear a Fox anchor ask, 'Say, Bob, why are these African-Americans so poor to begin with?'"