Still, no socially concerned documentary will ever reach mass audiences like a Skyfall or an Iron Man 3. And not everyone is thrilled by the prospect of seeing one. It’s true that they tend to be liberal in outlook – or at the very least, oppositional. They tend to preach to the converted. Some of them have a finger-wagging quality when highlighting a serious issue. And many people shy away from being told what’s good for them, preferring less complicated entertainment.