One of the worst things about Hollywood is the way that it concentrates location shooting in a single town. And one of the best things about American independent movies, especially in the modern age of first-person filmmaking, is their regionalism. When young directors return to their home towns and shoot their coming-of-age stories, they collectively provide a more varied and complex vision of America. Think of the Austin of early Richard Linklater, the Brooklyn of Spike Lee. Or another instance: Ira Sachs, whose latest film, “Passages,” opens today, set his first feature, “The Delta” (1996), in and around Memphis, where he grew up. The movie (newly streaming on the Criterion Channel) is the story of Lincoln (Shayne Gray), a high-school student from a prosperous family who’s growing up g...