In the 25 years from 1930 to 1955, the Western movie raised a lot of kids. If you were 10 years old in 1930, you faced World War II in 1941. If you were born at the end of the 1930s, you were 10 or more years of age near the end of the positive Western movie era, and you were the last to experience the thrill of the matinee Westerns before the era flickered and died. If you were a "baby boomer," you missed the matinee Western era all together, but you grew up with what filled the vacuum. You got the dark, inverted, and morally perverted Westerns that filled the vacuum left by the vanished positive Westerns.
Let us be very clear that fiction-based movies are an art form, and art is "the selective recreation of reality, according to the artist's metaphysical values." [For an outstanding and proper treatment about the meaning of art and its importance to every human, read Ayn Rand's Romantic Manifesto.]
We have to dig into that definition just a little. "Metaphysics" refers to the very foundations of reality, its nature, including human nature, and each person has his own version of metaphysics, including artists. There is just one real version of reality and a proper metaphysics, but people are capable of trying to make work all sorts of unworkable contradictions, which is why the definition of art refers to what the artist accepts (usually always implicitly) as his own view of reality. "Values" refers to that which people act to gain or keep, and "virtues" are those actions. Art ties ethics or morality (the realm of values) to reality (metaphysics), as the artist conceives it.
A movie, for example, presents how the writer(s), director(s), and actor(s) view life's most important values. You, the viewer or art consumer, experience this view as a whole as you watch the movie and contemplate it afterward. The "metaphysical values" of the movie interact with you own. Thus, you and others experience enormously similar or enormously varied responses to the movie, based on your views of life and reality and what of these you value. This phenomenon accounts for why two people viewing the same movie may have widely differing reactions to it and responses to it.
All of the foregoing pertains to every single fictional movie, whether black and white or in color, whether with sound or without, whether short or long. Westerns were an absolute laboratory for studying morality on an individual and cultural level.
Let's go there next...