Analyze do the opening and closing shots suggest a bias, or an inclination to one side of the story, on the part of the filmakers? explain

Of course. If Hollywood movies are meant, this is inevitable. Whole industry is involved in recording Hollywood films, determining the theme to be processed in the film, who is the "positive", who is "negative", is designed in advance what degree of bias will be represented according to the goal to be achieved. Then, producers order a script, whether they need to write a new one or adapt a literary work. Then this scenario is given to the selected director.

Nothing is different with the so-called authorial film.

The introductory scene can display the current situation of a positive or negative person or group, their actions, their psychological profile which still creates filmmakers, emphasizing with the help of various film techniques that this should be accepted by the auditorium. Of course, the same characteristics can be completely different if desired.

The final scene is usually much more convincing in suggesting a conclusion about a person, a group, a nation. It also uses the famous music effect we may not be aware of. The whole environment of statists, colors that accentuate the whole atmosphere of the environment, re-created the psychological profiles that through the film "evolve" as previously imagined with the realistic presentation of facts, indicate that how we should think.

i guess you are missing the idea that has to be supported, am i right?

i rerally dont know