On January 30, 1972, the Northern Ireland Civil Rights Association held a rally which marched through the Bogside area of Derry, in Northern Ireland. And that’s about the last detail that anyone agrees on for the next few hours.
Accounts of the size of the crowd vary from 300 to 30,000, and of its behaviour even moreso. The level of hostility by each side to the other is disputed, with each accusing the other of causing the events that followed.
What happened after that is not disputed. Members of the UK armed forces, primarily representing the 1st Battalion, Parachute Regiment, opened fire on the march. 26 protestors were shot by police and military forces, half of those fatally (another died months later from injuries attributed to the shots). Two more were injured when hit by military vehicles.
Understandably, the event became known as Bloody Sunday.