With a popular African-American presidential candidate and the increasing influence of Hispanic voters, the 2008 presidential election has brought new attention to minority groups in the U.S. Essayist Clarence Page of the Chicago Tribune reflects on how we define race.

Years after Hurricane Katrina and subsequent flooding caused a mass evacuation of New Orleans, a growing population of Latinos is moving into the city. NewsHour correspondent Tom Bearden presents the latest report in a series on Katrina's two-year anniversary.