‘He’s a son of a bitch – but he’s usually right’: why did Seymour Hersh quit the film about his earth-shattering exposés?

He is the prickly, hotheaded journalist who uncovered the My Lai massacre in Vietnam and torture at Abu Ghraib prison. Finishing Cover-Up, a film about his astonishing life and countless scoops, was never going to be easyOne morning last month, Seymour Hersh set off to buy a newspaper. The reporter walked for 30 minutes, covered six blocks of his neighbourhood, Georgetown in Washington DC, and didn’t see a single sign of life. No newsstands on street corners selling the glossies and the da