A Slamdance Film Festival world premiere and documentary competition title that delves into a subset of the disastrous aftereffects of the April, 2010, British Petroleum Deepwater Horizon oil spill, Vanishing Pearls: The Oystermen of Pointe à la Hache is a devastating piece of community portraiture, and a look at the diminished choices of the working poor. Directed by Nailah Jefferson, this modestly scaled but no less heartrending work is instructive about the different public faces that corporations will try on, depending on how many cameras are on them and what best suits their most pressing purposes. There is no one easy answer or solution that emerges from Vanishing Pearls — no single decision that, if reversed, would bring stability to its subjects. And maybe that’s what’s saddest of all — that the exploitation of the poor takes many shapes, but that they are also among the most economically susceptible to forces of change beyond their control. For the full, original review, from ShockYa, click here; for more information on the movie, click here to visit its website. (Perspective Pictures, unrated, 88 minutes)