Just as it’s easier to avert one’s eyes on the street from a passed out homeless person, or a begging vagrant, it might be tempting to avoid this effective docu-drama from Oren Moverman, the director of the equally powerful “The Messenger” and “Rampart”. But that would be a mistake. Moverman, not scared to confront searing social issues, turns his camera on America’s homeless and captures a slice of life with cinema verité observational skill and documentary detail.