President of the United States Barack Obama delivered a speech at the Together We Thrive: Tucson and America memorial on January 12, 2011, held in the McKale Center on the University of Arizona campus.

It honored the victims of the 2011 Tucson shooting and included themes of healing and national unity. Watched by more than 30 million Americans, it drew widespread, unusual praise from politicians and commentators across the political spectrum and from abroad.

Obama began writing his speech the day of the shooting, discussing the matter with young Pentecostal clergyman, Joshua DuBois, head of the White House Office of Faith-Based and Neighborhood Partnerships. That day and the next, he spoke with relatives of the victims of the shooting, including Mark E. Kelly the astronaut who is Gabrielle Giffords' husband.

The formal speechwriting process began on January 10, with staff speechwriter Cody Keenan. Previously a staffer for Senator Edward Kennedy, Keenan helped write the remarks Obama delivered after Kennedy's death. Keenan is a Chicago native, and a recent graduate of Harvard University with a master's degree in public policy.

Barack Hussein Obama II (ⁱ/bəˈrɑːk huːˈseɪn oʊˈbɑːmə/; born August 4, 1961) is the 44th and current President of the United States. He is the first African American to hold the office. In January 2005, Obama was sworn in as a U.S. Senator in the state of Illinois. He would hold this office until November 2008, when he resigned following his victory in the 2008 presidential election.

Born in Honolulu, Hawaii, Obama is a graduate of Columbia University and Harvard Law School, where he was the president of the Harvard Law Review. He was a community organizer in Chicago before earning his law degree. He worked as a civil rights attorney in Chicago and taught constitutional law at the University of Chicago Law School from 1992 to 2004. He served three terms representing the 13th District in the Illinois Senate from 1997 to 2004.

Following an unsuccessful bid against the Democratic incumbent for a seat in the United States House of Representatives in 2000, Obama ran for the United States Senate in 2004. Several events brought him to national attention during the campaign, including his victory in the March 2004 Illinois Democratic primary for the Senate election and his keynote address at the Democratic National Convention in July 2004. He won election to the U.S. Senate in Illinois in November 2004. His presidential campaign began in February 2007, and after a close campaign in the 2008 Democratic Party presidential primaries against Hillary Rodham Clinton, he won his party's nomination. In the 2008 presidential election, he defeated Republican nominee John McCain, and was inaugurated as president on January 20, 2009. Nine months later, Obama was named the 2009 Nobel Peace Prize laureate. In April 2011, he announced that he would be running for re-election in 2012.

Tavis Smiley (pronounced /ˈtævɨs/; born September 13, 1964) is a talk show host, author, liberal political commentator, entrepreneur, advocate and philanthropist. Smiley was born in Gulfport, Mississippi, and grew up in Kokomo, Indiana. After attending Indiana University, he worked during the late 1980s as an aide to Tom Bradley, the mayor of Los Angeles. Smiley became a radio commentator in 1991, and starting in 1996, he hosted the talk show BET Talk (later renamed BET Tonight) on BET. Controversially, after Smiley sold an exclusive interview of Sara Jane Olson to ABC News in 2001, BET declined to renew Smiley's contract that year. Smiley then began hosting The Tavis Smiley Show on NPR from 2002 to 2004 and currently hosts Tavis Smiley on PBS on the weekdays and "The Tavis Smiley Show" from PRI. In 2010 Smiley and Dr. Cornel West have joined forces for their own radio talk show, Smiley & West. They were featured together interviewing musician Bill Withers in the 2009 documentary film Still Bill.

Martin Luther King, Jr. (January 15, 1929 – April 4, 1968) was an American clergyman, activist, and prominent leader in the African-American Civil Rights Movement. He is best known for his role in the advancement of civil rights in the United States and around the world, using nonviolent methods following the teachings of Mohandas Karamchand Gandhi. King has become a national icon in the history of modern American liberalism.

A Baptist minister, King became a civil rights activist early in his career. He led the 1955 Montgomery Bus Boycott and helped found the Southern Christian Leadership Conference (SCLC) in 1957, serving as its first president. King's efforts led to the 1963 March on Washington, where King delivered his "I Have a Dream" speech. There, he established his reputation as one of the greatest orators in American history.

In 1964, King became the youngest person to receive the Nobel Peace Prize for his work to end racial segregation and racial discrimination through civil disobedience and other nonviolent means. By the time of his death in 1968, he had refocused his efforts on ending poverty and stopping the Vietnam War.

 Martin Luther (help·info) (10 November 1483 – 18 February 1546) was a German monk, priest, professor of theology and iconic figure of the Protestant Reformation. He strongly disputed the claim that freedom from God's punishment for sin could be purchased with money. He confronted indulgence salesman Johann Tetzel with his Ninety-Five Theses in 1517. His refusal to retract all of his writings at the demand of Pope Leo X in 1520 and the Holy Roman Emperor Charles V at the Diet of Worms in 1521 resulted in his excommunication by the pope and condemnation as an outlaw by the Emperor.

Luther taught that salvation is not earned by good deeds but received only as a free gift of God's grace through faith in Jesus Christ as redeemer from sin. His theology challenged the authority of the Pope of the Roman Catholic Church by teaching that the Bible is the only source of divinely revealed knowledge and opposed sacerdotalism by considering all baptized Christians to be a holy priesthood. Those who identify with Luther's teachings are called Lutherans.