Leaders go in and out of fashion, making statues built in their memory a tricky issue.
Howard Thurman, a mentor to MLK, first met Gandhi during a visit to India in 1936. He came to understand nonviolence as a force more powerful than hate that had the power to transform the world.
Thurman was 30 years older than King: the same age, in fact, as King's father. Among his most significant contributions was bringing the ideas of nonviolence to the civil rights movement.
To become a successful innovator, follow Marie Curie, Mahatma Gandhi and today's female social entrepreneurs -- focus on ideas and social value, not money.
John McCain did something during the 2008 U.S. presidential election that would seem very out of place today: he made himself vulnerable by speaking up about the character of opponent Barack Obama.
King led one of the most successful resistance movements in American history. A scholar explains King's strategies in resistance.
"The Magnificent Seven" was a slice of daily life, a class struggle song framed by the sound of funk and the emergent hip-hop in New York.