D. W. Griffith's controversial film The Birth of a Nation premieres in Los Angeles.

The Birth of a Nation, originally called The Clansman, is a 1915 American silent epic drama film directed by D. W. Griffith and starring Lillian Gish. The screenplay is adapted from Thomas Dixon Jr.'s 1905 novel and play The Clansman. Griffith co-wrote the screenplay with Frank E. Woods and produced the film with Harry Aitken.

The Birth of a Nation is a landmark of film history, lauded for its technical virtuosity. It was the first American 12-reel film ever made and, at three hours, also the longest up to that point. Its plot, part fiction and part history, chronicles the assassination of Abraham Lincoln by John Wilkes Booth and the relationship of two families in the Civil War and Reconstruction eras over the course of several yearsthe pro-Union (Northern) Stonemans and the pro-Confederacy (Southern) Camerons. It was originally shown in two parts separated by an intermission, and it was the first American-made film to have a musical score for an orchestra. It pioneered closeups and fadeouts, and it includes a carefully staged battle sequence with hundreds of extras (another first) made to look like thousands. It came with a 13-page "Souvenir Program". It was the first motion picture to be screened inside the White House, viewed there by President Woodrow Wilson, his family, and members of his cabinet.

The film was controversial even before its release, and it has remained so ever since; it has been called "the most controversial film ever made in the United States":198 and "the most reprehensibly racist film in Hollywood history". Lincoln is portrayed positively, a friend of the South, atypical of a narrative that promotes the Lost Cause ideology. The film has been denounced for its racist depiction of African Americans. The film portrays blacks (many of whom are played by white actors in blackface) as unintelligent and sexually aggressive toward white women. The Ku Klux Klan (KKK) is portrayed as a heroic force, necessary to preserve American values, protect white women, and maintain white supremacy.Popular among white audiences nationwide, the films success was both a consequence of and a contributor to racial segregation throughout the U.S. In response to the film's depictions of black people and Civil War history, African Americans across the U.S. organized and protested. In Boston and other localities, black leaders and the NAACP spearheaded an unsuccessful campaign to have it banned on the basis that it inflamed racial tensions and could incite violence. Griffith's indignation at efforts to censor or ban the film motivated him to produce Intolerance the following year.In spite of its divisiveness, The Birth of a Nation was a huge commercial success across the nationgrossing more than any previous motion pictureand it profoundly influenced both the film industry and American culture. The film has been acknowledged as an inspiration for the rebirth of the Ku Klux Klan, which took place only a few months after its release. In 1992, the Library of Congress deemed the film "culturally, historically, or aesthetically significant" and selected it for preservation in the National Film Registry.

David Wark Griffith (January 22, 1875 – July 23, 1948) was an American film director. Considered one of the most influential figures in the history of the motion picture, he pioneered many aspects of film editing and expanded the art of the narrative film.Griffith is known to modern audiences primarily for directing the film The Birth of a Nation (1915). One of the most financially successful films of all time, it made investors enormous profits, but it also attracted much controversy for its degrading portrayals of African Americans, glorification of the Ku Klux Klan, and racist viewpoint. The film led to riots in several major cities all over the United States and attempts by the NAACP to have the film banned. Griffith made his next film Intolerance (1916) as an answer to critics, who he felt unfairly maligned his work.

Together with Charlie Chaplin, Mary Pickford, and Douglas Fairbanks, Griffith founded the studio United Artists in 1919 with the goal of enabling actors and directors to make films on their own terms as opposed to those of commercial studios. Several of Griffith's later films were successful, including Broken Blossoms (1919), Way Down East (1920), and Orphans of the Storm (1921), but the high costs he incurred for production and promotion often led to commercial failure. He had made roughly 500 films by the time of his final feature, The Struggle (1931), all of which but three were completely silent.

Griffith has a complicated legacy. Although far from universally so, he was a widely celebrated and respected figure in his lifetime, and modern film historians still recognize him for his technical contributions to the craft of filmmaking. Nevertheless, many critics have characterized both Griffith and his work (most notably, The Birth of a Nation) as racist, both during his life and in the decades that have followed since his death. Historians frequently cite The Birth of a Nation as a major factor in the KKK's revival in the 20th century, and it remains a polarizing work to this day.