The author argues for broadening the scope of what is considered literature and what is okay to teach in classrooms.
Explanation:
The author's argument is that the television and film have been forays old enough to be morally and culturally significant as literature as a large population grows up with exposure to it and its existence shapes their worldview too.
Thus it can be taught in the schools to show what is good and what is not on these forms too as well as to understand what is important in cultural context in these art forms too and what must be preserved as a society.