Martin Luther King, Jr.
Dr. Martin Luther King rubs his head after being hit by a rock as he led a group of marchers through an all-white neighborhood, protesting alleged housing discrimination. One of Dr. King’s followers holds up his hand to shield the Civil Rights leader from other rocks, bottles and firecrackers being thrown by hecklers lining the march route. Civil rights officials said late August 8th that they planned two demonstrations this week in white Chicago communities that have not experienced protests before. (Photo by Bettmann Archive/Getty Images)