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Popcorn now comes candied in ruby red, indigo blue and more. And don't be surprised by the popcorn buffet at the next wedding you attend. Bradley P. Johnson/via Flickr hide caption

itoggle caption Bradley P. Johnson/via Flickr

Not long after it was unveiled in 2011, controversy erupted over the Martin Luther King, Jr. Memorial. Critics argued that one of King's quotes had been paraphrased in a way that altered its meaning. In January, Interior Secretary Ken Salazar announced the mistake would be fixed. Karen Bleier/AFP/Getty Images hide caption

itoggle caption Karen Bleier/AFP/Getty Images

The Smithsonian's National Museum of African American History and Culture is expected to open in Washington, D.C., in 2015. Freelon Adjaye Bond/SmithGroup/Courtesy Nationa African Museum of African American History And Culture hide caption

itoggle caption Freelon Adjaye Bond/SmithGroup/Courtesy Nationa African Museum of African American History And Culture

Nineteenth century bilboes typically found on slave ships are displayed at the Smithsonian's new exhibit: "Slavery at Jefferson's Monticello: Paradox of Liberty." Manuel Balce Ceneta/AP hide caption

itoggle caption Manuel Balce Ceneta/AP

A tower of books about Abraham Lincoln as seen from the top down. Maxell MacKenzie/ hide caption

itoggle caption Maxell MacKenzie/

"The Crying Indian," became an iconic messenger of the Ad Council's anti-pollution campaign. Courtesy of the Ad Council hide caption

itoggle caption Courtesy of the Ad Council

Marine Lt. Col. John Glenn demonstrates operations inside a Mercury capsule on Jan. 11, 1961. AP hide caption

itoggle caption AP

Charles G. Dawes served under Calvin Coolidge from 1925 to 1929. Dawes is the only vice president to have both a Nobel Peace Prize for his work in World War I and a Billboard Top 10 hit, and neither had anything to do with his tenure as vice president. Keystone/Getty Images hide caption

itoggle caption Keystone/Getty Images