Charlie Ahearn, director of the groundbreaking hip-hop documentary Wild Style (1983), profiles another chronicler of the scene, Jamel Shabazz, who’s been photographing B-boy culture since its inception in the early 80s. The tone of this documentary is generally exuberant, as the interviewees—who range from well-known figures like Fab Five Freddy and KRS-One to Shabazz’s former coworkers at a juvenile detention facility—joyfully recall the communal spirit and empowering message of early hip-hop culture. Yet there’s also a wistful undercurrent, as the movie argues that negative developments of the past 30 years (particularly the spread of crack cocaine) have destroyed the social conditions that made the movement possible. The observations feel authentic, and Ahearn generates plenty of energy in the way he organizes them.