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The third Monday of January is the annual observance of the birthday of Martin Luther King, Jr. NOTE: Some sources do not put a comma before Jr. Accept either; or follow the rules set by your district's grammar book. King was born on January 15, 1929, in Atlanta, Georgia. A minister and civil rights leader, King led a bus boycott in Montgomery, Alabama, in 1955. Devoted to nonviolence, he also led a peaceful march in Washington, D.C., during which he delivered his famous "I Have a Dream" speech. King was killed in Tennessee in April 1968.