Spike Lee's When the Levees Broke Online
Over at YouTube you'll find the entire Spike Lee 4-hour documentary on Hurricane Katrina, When the Levees Broke, online in 26 parts. I'm not sure how long it will be up, so if you're interested in watching the whole thing, I'd get started. While I found the documentary to be somewhat uneven, parts of it were incredibly moving.
In this clip (#9), starting at about the two-minute mark, there's a clip that leads up to President Lyndon B. Johnson's response to Hurricane Betsy back in 1965 (strangely enough — September 11, 1965) at the five-minute mark. When compared to Johnson's response, our current President's response appears shameful, which, of course, it was.
The entire segment is worth a watch.