Lean In, said Sheryl Sandberg – but after this week, can we ever see her or Facebook in the same light again? | Emma Brockes

Many years ago, when Facebook was an entity most people had warm – or at least neutral – feelings towards, I visited the company’s HQ in Menlo Park, California. I admired the free restaurants and leisure facilities. I sneered at the “graffiti wall”, where Facebook employees were…