Lee lets Katrina tragedy speak for itself

When Spike Lee is mad about something, he'll usually let you know.

Spike Lee is mad about Hurricane Katrina and the pathetic response that resulted in the nearly complete devastation of New Orleans and the gulf states.

But in his new four-hour HBO documentary, "When the Levees Broke," Lee isn't in your face. The veteran filmmaker, in fact, isn't on screen at all and lets the people whose lives were directly affected tell the story.