Explain what you feel the writer's "argument" is.
What is the author trying to share or convince the reader of, if anything?
Hollywood: Writers Write More than Novels
You may also be familiar with rhetorical movies that advance a specific political or social agenda. Many American Westerns, for example, create an unrealistic memory of American expansion into the West, with cowboys that are clearly heroic characters. A classic example is the character typically played by John Wayne.
During the highly charged years of World War II, movies were one medium through which Americans understood who they were and why they were fighting.
These films went beyond simply explaining historical events; they asked audiences to consider the Nazi threat, they put a face on allies and enemies, and they explored changing wartime gender roles.
Many of these movies portrayed events in a simple, good/bad light that didn't always match reality or were used as propaganda exercises to get the public to rally behind the war effort.
The argument presented in the article (or essay) above refers to the fact that it is simply left to the watcher of the film to interpret what is being stated in the film. What this means is that, when one is unfamiliar with their own identity or the identity of their culture, the rely upon how others identify them and their culture.
The problem that results in these interpretations is that those who lack the understanding of their own history take what they see as a truth. Therefore, those who watch the films come to terms with the "realities" portrayed by the filmmakers based upon the filmmakers interpretations of life and the happenings of what needed defining and explanation.
To further explain, a filmmaker in Germany (for example) may portray the war as very different than those in Hollywood (who would tend to sympathize with American ideas about the war). No director's interpretation of historical events can be seen as factual based upon differing views.
Therefore, the author of the text is simply looking to educate people regarding the fact that movies are simply interpretations of historical events in such a way which supports the way they wish others to see the events.