Question 9 on the first page of the 2010 Census form. After more than a century, the Census Bureau is dropping use of the word "Negro" to describe black Americans in its surveys. Instead of the term, which was popularized during the Jim Crow era of racial segregation, census forms will use "black" or "African-American." Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

The crowded scene on "Black Friday" at Macy's in Manhattan. The U.S. population is projected to hit 400 million in 2051, Census says, up from 321 million in 2015. Stan Honda /AFP/Getty Images hide caption

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Activist musician Pete Seeger, 92, at the Occupy Wall Street protests in New York City last month. He's part of the oldest old generation. John Minchillo/AP hide caption

itoggle caption John Minchillo/AP

In Los Angeles: A man dressed as John Lennon at the "Move Your Money" protest on Saturday. He and others protested bank fees and pushed for "good jobs." David McNew/Getty Images hide caption

itoggle caption David McNew/Getty Images