Death of a Gunfighter

Death of a Gunfighter is a 1969 American Western film directed by Robert Totten and Don Siegel. It stars Richard Widmark and Lena Horne and features an original score by Oliver Nelson. The theme of the film is the "passing" of the West, the clash between a traditional character and the politics and demands of modern society. The film direction is credited to Allen Smithee, a pseudonym that has subsequently been used by directors who do not wish to be credited for their film.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.