If a movie crammed front-to-back with bad news, woeful stats and glaring injustice can be considered inspiring, well, then, “Inequality for All” – starring the diminutive, indefatigable Robert Reich – is that movie. A must-see documentary about America’s widening income gap and shrinking middle class, “Inequality for All” shadows the former secretary of labor (in the first Clinton administration) and current University of California Berkeley economics professor as he drives his Mini Cooper around, meeting with families struggling to live paycheck to paycheck, faced with mounting expenses, day care costs, rents, mortgages – household budgets in the red, no matter how hard they try.