Martin Luther King, Jr., was born on January 15, 1929, in Atlanta, Georgia. He was the son of Reverend Martin Luther King, Sr. and Alberta Williams King. Although Dr. King's name was mistakenly recorded as "Michael King" on his birth certificate, this was not discovered until 1934, when his father applied for a passport. He had an older sister, Willie Christine (September 11, 1927) and a younger brother, Alfred Daniel (July 30, 1930 – July 1, 1969). King sang with his church choir at the 1939 Atlanta premiere of the movie Gone with the Wind. He entered Morehouse College at age fifteen, skipping his ninth and twelfth high school grades without formally graduating. In 1948, he graduated from Morehouse with a Bachelor of Arts (B.A.) degree in sociology, and enrolled in Crozer Theological Seminary in Chester, Pennsylvania, and graduated with a Bachelor of Divinity (B.D.) degree in 1951. In September 1951, King began doctoral studies in systematic theology at Boston University and received his Doctor of Philosophy (Ph.D.) on June 5, 1955.

In 1953, at age 24, King became pastor of the Dexter Avenue Baptist Church in Montgomery, Alabama. On December 1, 1955, Rosa Parks was arrested for refusing to comply with the Jim Crow laws that required her to give up her seat to a white man. The Montgomery Bus Boycott, urged and planned by E. D. Nixon (head of the Montgomery NAACP chapter and a member of the Brotherhood of Sleeping Car Porters) and led by King, soon followed. (In March 1955, a 15 year old school girl, Claudette Colvin, suffered the same fate, but King did not become involved.) The boycott lasted for 381 days, the situation becoming so tense that King's house was bombed. King was arrested during this campaign, which ended with a United States Supreme Court decision outlawing racial segregation on all public transport.

King was instrumental in the founding of the Southern Christian Leadership Conference (SCLC) in 1957, a group created to harness the moral authority and organizing power of black churches to conduct non-violent protests in the service of civil rights reform. King continued to dominate the organization. King was an adherent of the philosophies of nonviolent civil disobedience as described in Henry David Thoreau's essay of the same name, and used successfully in India by Mohandas "Mahatma" Gandhi. King applied this philosophy to the protests organized by the SCLC. In 1959, he wrote The Measure of A Man, from which the piece What is Man?, an attempt to sketch the optimal political, social, and economic structure of society, is derived.

The FBI began wiretapping King in 1961, fearing that Communists were trying to infiltrate the Civil Rights Movement, but when no such evidence emerged, the bureau used the incidental details caught on tape over six years in attempts to force King out of the preeminent leadership position.

King correctly recognized that organized, nonviolent protest against the system of southern segregation known as Jim Crow laws would lead to extensive media coverage of the struggle for black equality and voting rights. Journalistic accounts and televised footage of the daily deprivation and indignities suffered by southern blacks, and of segregationist violence and harassment of civil rights workers and marchers, produced a wave of sympathetic public opinion that made the Civil Rights Movement the single most important issue in American politics in the early 1960s.

King organized and led marches for blacks' right to vote, desegregation, labor rights and other basic civil rights. Most of these rights were successfully enacted into United States law with the passage of the Civil Rights Act of 1964 and the Voting Rights Act of 1965.

King and the SCLC applied the principles of nonviolent protest with great success by strategically choosing the method of protest and the places in which protests were carried out in often dramatic stand-offs with segregationist authorities. Sometimes these confrontations turned violent. King and the SCLC were instrumental in the unsuccessful Albany Movement in Albany, Georgia, in 1961 and 1962, where divisions within the black community and the canny, low-key response by local government defeated efforts; in the Birmingham protests in the summer of 1963; and in the protest in St. Augustine, Florida, in 1964. King and the SCLC joined forces with the Student Nonviolent Coordinating Committee (SNCC) in Selma, Alabama, in December 1964, where SNCC had been working on voter registration for several months.

King, representing SCLC, was among the leaders of the so-called "Big Six" civil rights organizations who were instrumental in the organization of the March on Washington for Jobs and Freedom in 1963. The other leaders and organizations comprising the Big Six were: Roy Wilkins, NAACP; Whitney Young, Jr., Urban League; A. Philip Randolph, Brotherhood of Sleeping Car Porters; John Lewis, SNCC; and James Farmer of the Congress of Racial Equality (CORE). The primary logistical and strategic organizer was King's colleague Bayard Rustin. For King, this role was another which courted controversy, since he was one of the key figures who acceded to the wishes of President John F. Kennedy in changing the focus of the march. Kennedy initially opposed the march outright, because he was concerned it would negatively impact the drive for passage of civil rights legislation, but the organizers were firm that the march would proceed.

The march originally was conceived as an event to dramatize the desperate condition of blacks in the South and a very public opportunity to place organizers' concerns and grievances squarely before the seat of power in the nation's capital. Organizers intended to excoriate and then challenge the federal government for its failure to safeguard the civil rights and physical safety of civil rights workers and blacks, generally, in the South. However, the group acquiesced to presidential pressure and influence, and the event ultimately took on a far less strident tone.

As a result, some civil rights activists felt it presented an inaccurate, sanitized pageant of racial harmony; Malcolm X called it the "Farce on Washington," and members of the Nation of Islam who attended the march faced a temporary suspension.

The march did, however, make specific demands: an end to racial segregation in public school; meaningful civil rights legislation, including a law prohibiting racial discrimination in employment; protection of civil rights workers from police brutality; a $2 minimum wage for all workers; and self-government for the District of Columbia, then governed by congressional committee.

Despite tensions, the march was a resounding success. More than a quarter million people of diverse ethnicities attended the event, sprawling from the steps of the Lincoln Memorial onto the National Mall and around the reflecting pool. At the time, it was the largest gathering of protesters in Washington's history. King's "I Have a Dream" speech electrified the crowd. It is regarded, along with Abraham Lincoln's Gettysburg Address, as one of the finest speeches in the history of American oratory.

Throughout his career of service, King wrote and spoke frequently, drawing on his experience as a preacher. His "Letter from Birmingham Jail", written in 1963, is a passionate statement of his crusade for justice. On October 14, 1964, King became the youngest recipient of the Nobel Peace Prize, which was awarded to him for leading non-violent resistance to end racial prejudice in the United States.

King and SCLC, in partial collaboration with SNCC, attempted to organize a march from Selma to the state capital of Montgomery, for March 25, 1965. The first attempt to march on March 7 was aborted because of mob and police violence against the demonstrators. This day has since become known as Bloody Sunday. Bloody Sunday was a major turning point in the effort to gain public support for the Civil Rights Movement, the clearest demonstration up to that time of the dramatic potential of King's nonviolence strategy. King, however, was not present. After meeting with President Lyndon B. Johnson, he attempted to delay the march until March 8, but the march was carried out against his wishes and without his presence by local civil rights workers. Footage of the police brutality against the protesters was broadcast extensively and aroused national public outrage.

The unexpected ending of a second attempt of the march aroused the surprise and anger of many within the local movement. The march finally went ahead fully on March 25, and it was during this march that Willie Ricks coined the phrase "Black Power" (widely credited to Stokely Carmichael). On the steps of the state capitol building, King delivered a speech that has become known as "How Long, Not Long."

In 1966, after several successes in the South, King and other people in the civil rights organizations tried to spread the movement to the North, with Chicago as its first destination. King and Ralph Abernathy, both middle class folk, moved into Chicago's slums as an educational experience and to demonstrate their support and empathy for the poor.

The SCLC formed a coalition with CCCO, Coordinating Council of Community Organizations, an organization founded by Albert Raby, Jr., and the combined organizations' efforts were fostered under the aegis of The Chicago Freedom Movement (CFM). During that spring several dual white couple/black couple tests on real estate offices uncovered the practice, now banned by the Real Estate Industry, of "steering"; these tests revealed the racially selective processing of housing requests by couples who were exact matches in income, background, number of children, and other attributes, with the only difference being their race.

The needs of the movement for radical change grew, and several larger marches were planned and executed, including those in the following neighborhoods: Bogan, Belmont-Cragin, Jefferson Park, Evergreen Park (a suburb southwest of Chicago), Gage Park and Marquette Park, among others.

In Chicago, Abernathy later wrote that they received a worse reception than they had in the South. Their marches were met by thrown bottles and screaming throngs, and they were truly afraid of starting a riot. King's beliefs mitigated against his staging a violent event; if King had intimations that a peaceful march would be put down with violence he would call it off for the safety of others. Nonetheless, he led these marches in the face of death threats to his person. And in Chicago the violence was so formidable it shook the two friends.

Another problem was the duplicity of the city leaders. Abernathy and King secured agreements on action to be taken, but this action was subverted after-the-fact by politicians within Mayor Richard J. Daley's corrupt machine. Abernathy disliked the slums and secretly moved out after a short period. King stayed and wrote of the emotional impact Coretta and his children suffered from the horrid conditions.

When King and his allies returned to the south, they left Jesse Jackson, a seminary student who had previously joined the movement in the South, in charge of their organization. Jackson displayed oratorical skill and organized the first successful boycotts against chain stores. One such campaign targeted A&P Stores which refused to hire blacks as clerks; the campaign was so effective that it laid the groundwork for the equal opportunity programs begun in the 1970s.

In 1968, King and the SCLC organized the "Poor People's Campaign" to address issues of economic justice. However, according to the article " Coalition Building and Mobilization Against Poverty", King and SCLC's Poor People's Campaign was not supported by the other leaders of the Civil Rights Movement, including Bayard Rustin. Their opposition incorporated arguments that the goals of Poor People Campaign was too broad, the demands unrealizable, and thought these campaigns would accelerate the backlash and repression on the poor and the black.

The campaign culminated in a march on Washington, D.C. demanding economic aid to the poorest communities of the United States. He crisscrossed the country to assemble "a multiracial army of the poor" that would descend on Washington—engaging in nonviolent civil disobedience at the Capitol, if need be—until Congress enacted a poor people's bill of rights. Reader's Digest warned of an "insurrection."

King's economic bill of rights called for massive government jobs programs to rebuild America's cities. He saw a crying need to confront a Congress that had demonstrated its "hostility to the poor"—appropriating "military funds with alacrity and generosity," but providing "poverty funds with miserliness." His vision was for change that was more revolutionary than mere reform: he cited systematic flaws of racism, poverty, militarism and materialism, and that "reconstruction of society itself is the real issue to be faced."

In late March 1968, King went to Memphis, Tennessee in support of the black sanitary public works employees, represented by AFSCME Local 1733, who had been on strike since March 12 for higher wages and better treatment. (For example, African American workers, unlike white workers, were not paid when sent home because of inclement weather.)

On April 3, King returned to Memphis and addressed a rally, delivering his "I've been to the Mountaintop" address at Mason Temple ( Church of God in Christ, Inc. - World Headquarters). King's flight to Memphis had been delayed by a bomb threat against his plane. In the close of the last speech of his career, in reference to the bomb threat, King said the following:

“ And then I got to Memphis. And some began to say the threats, or talk about the threats that were out. What would happen to me from some of our sick white brothers? Well, I don't know what will happen now. We've got some difficult days ahead. But it doesn't matter with me now. Because I've been to the mountaintop. And I don't mind. Like anybody, I would like to live a long life. Longevity has its place. But I'm not concerned about that now. I just want to do God's will. And He's allowed me to go up to the mountain. And I've looked over. And I've seen the promised land. I may not get there with you. But I want you to know tonight, that we, as a people, will get to the promised land. And I'm happy, tonight. I'm not worried about anything. I'm not fearing any man. Mine eyes have seen the glory of the coming of the Lord.

” King was booked in room 306 at the Lorraine Motel, owned by Walter Bailey, in Memphis. Reverend Ralph Abernathy, King's close friend and colleague who was present at the assassination, swore under oath to the HSCA that King and his entourage stayed at room 306 at the Lorraine Motel so often it was known as the 'King-Abernathy suite.' While standing on the motel's 2nd floor balcony, King was shot at 6:01 p.m. April 4, 1968. The bullet entered through his right cheek smashing his jaw and then traveling down his spinal cord before lodging in his shoulder. According to biographer Taylor Branch, King's last words on the balcony were to musician Ben Branch (no relation to Taylor Branch) who was scheduled to perform that night at an event King was attending: "Ben, make sure you play Take My Hand, Precious Lord in the meeting tonight. Play it real pretty." Friends inside the motel room heard the shots and ran to the balcony to find King on the ground. Local Rev. Samuel "Billy" Kyles, whose house King was on his way to, remembers that upon seeing King go down he ran into a hotel room to call an ambulance. Nobody was on the switchboard, so Kyles ran back out and yelled to the police to get one on their radios. It was later revealed that the hotel switchboard operator, upon seeing King shot, had had a fatal heart attack and could not operate the phones. King was pronounced dead at St. Joseph's Hospital at 7:05 p.m. The assassination led to a nationwide wave of riots in more than 60 cities.

Five days later, President Lyndon B. Johnson declared a national day of mourning for the lost civil rights leader. A crowd of 300,000 attended his funeral that same day. Vice-President Hubert Humphrey attended on behalf of Lyndon B. Johnson, who was holding a meeting on the Vietnam War at Camp David. (There were fears that Johnson might be hit with protests and abuses over the war if he attended.) At his widow's request, King eulogized himself: his last sermon at Ebenezer Baptist Church, a recording of his famous 'Drum Major' sermon, given on February 4, 1968, was played at the funeral. In that sermon he makes a request that at his funeral no mention of his awards and honors be made, but that it be said that he tried to "feed the hungry", "clothe the naked", "be right on the [Vietnam] war question", and "love and serve humanity". Per King's request, his good friend Mahalia Jackson sang his favorite hymn, "Take My hand, Precious Lord" at his funeral.

According to biographer Taylor Branch, King's autopsy revealed that though he was only 39 years old, he had the heart of a 60 year old man, evidencing the stress the 13 years in the civil rights movement had on him.

The city quickly settled the strike, on favorable terms, after the assassination.

Two months after King's death, escaped convict James Earl Ray was captured at London Heathrow Airport while trying to leave the United Kingdom on a false Canadian passport in the name of Ramon George Sneyd. Ray was quickly extradited to Tennessee and charged with King's murder, confessing to the assassination on March 10, 1969 (though he recanted this confession three days later).