How are the cultural, social, political or economic forces of the period reflected in how an author crafts the text?

New Historicism or Historical Criticism asks readers to consider how context informs text. How are the cultural, social, political or economic forces of the period reflected in how an author crafts the text? Considering the period of the 1960’s, how are civil rights, second wave feminism, redlining, Afrocentrcism, urban decline, etc. reflected in the themes, plot or characters of the drama?