Who Was . . . . Martin Luther King Jr.?

Minister, saint, hero, civil rights activist - These are the words often used to describe Dr. Martin Luther King Jr. - However, in light of President Barack Obama's second-term inauguration ceremony this morning, the word that seems to fit the bill perfectly, is visionary - The man who had the foresight to see that America could one day transform into a nation where everyone is equal, regardless of race, color or creed. So who was this amazing man that single handedly spearheaded America's civil rights movement?