How was Intolerance connected to the controversy over The Birth of a Nation?

Director D.W. Griffith’s 1916 epic Intolerance was created as a direct response to the intense controversy and censorship surrounding his previous film, The Birth of a Nation (1915).12

While The Birth of a Nation was a technical milestone, it was widely condemned for its overt racism, promotion of the Ku Klux Klan, and shocking depictions of racial violence, which sparked public protests, riots, and bans in several U.S. states. Following this backlash, Griffith became a vocal opponent of motion-picture censorship.32

Intolerance served as Griffith’s thematic rebuttal to his critics. By examining human failings and prejudices across four historical and contemporary narratives, the film functioned as an allegorical plea for tolerance. Despite its artistic ambition and technical innovation, the film was a financial failure, and Griffith’s attempt to address the controversy did not mitigate the lasting criticism of his earlier work's racist philosophy.21