When reports emerged that hundreds of people had been killed in an attack on a primary school in southern Iran, a small team of investigators rushed to social media. It was the first day of the joint US-Israeli strikes, and misinformation began to spread online. Restrictions imposed by Iranian authorities made it dangerous for people who witnessed the strike to speak out. That left the Human Rights Watch’s digital investigation team with the critical task of uncovering the facts and establishing the truth surrounding the attack. The team of eight, which investigates war crimes worldwide, immediately got to work, painstakingly analysing every piece of digital evidence to reconstruct the events of what has been one of the deadliest incidents in the ongoing war in the Middle East . From their offices in London, Berlin, Geneva, and California, they scoured social media for any footage or information they could find.…