The basics of ideology

I am providing a link to an article titled "Film and Ideology." I found this article published on the Washington State University website by M.Hughes. The author starts off with a basic definition of the term, while simplifying it to the notion of " a systematic worldview" of the way we define ourselves and the way we define our relationships with others. The author then continues with looking at ideology in terms of its relation to films. He discusses the film Casablanca and how it portrayed the importance of nationalism. He then takes an interesting approach and discusses how ideology in films has changed with time e.g. in the 1960's films were based on cowboy stories; and when women gained rights, films were reflected on feminist views. He then concludes his article by braking up the term into three categories: neutral; implicit; and explicit and provides definitions for all three.
Here is a quote

Neutral ideology is found in escapist films and light entertainment with emphasis on action, pleasure, and entertainment values for their own sake. Superficial treatment of right and wrong: Honey I Shrunk the Kids (1989). These films in themselves reflect a value system where fun and entertainment are forms of consumerism.