There was outrage in The Bronx when the last general-interest bookstore, Barnes & Noble, shut down permanently in 2017. Many Bronxites saw it as evidence that the borough is not viewed in a positive light and is forgotten when it comes to its intellectual curiosity. For filmmaker Gregory Hernandez, the turmoil gave him an idea to tell a story about illiteracy in the borough. The result is the film “1.5 Million: A Bronx Documentary” which, as preadvised, screened at the Pelham Parkway-Van Nest branch of the New York Public Library (NYPL) on Aug. 28.