The seemingly random patterns in low-paid and middle-class workers’ struggles are assembled into a cohesive narrative supplied by people who let the camera in for an intimate look. A few top executives are thrown in to highlight the economy’s inequality, which lower-paid workers like Randi recognize as deeply unfair. Randi, a health care aide in rural Mississippi, explains in a new documentary that her job “pays little and works you to the bone.” Produced by Netflix, “Working: What We Do All Day,” is narrated by former President Barak Obama, who occasionally talks about his middle-class family, interviews some of the featured workers, and explains the economic shifts – globalization and the explosion in Wall Street wealth in the 1980s –…