On January 30, 1972, during a civil rights march in Northern Ireland, the British Army killed 13 civilians. The eminent English jurist, Lord Saville, was tasked to conduct a public inquiry into what happened that ‘Bloody Sunday’. The report concluded that  the soldiers were unjustified in firing and led to an unqualified apology by Prime Minister Cameron. In an exclusive Digital Age interview with Professor Richard Susskind, Lord Saville says that digital technologies were indispensable to the inquiry.