Ivan Cooper Ivan Cooper Ivan Averill Cooper (born January 1944) is a former politician from Northern Ireland who was a member of the Parliament of Northern Ireland, and a founding member of the SDLP. He is best known for leading an anti-internment march which developed into the Bloody Sunday massacre on 30 January 1972, in Derry, County Londonderry, Northern Ireland. Cooper was born to a working-class Protestant family in Killaloo, County Londonderry, and later moved to the "Bogside" area of Derry city. He was briefly a member of the Claudy Young Unionist Association until April 1965 when he joined the Northern Ireland
Battle of the Bogside police. That night, police officers broke into homes in the Catholic Bogside area and assaulted several residents. An inquiry led by Lord Cameron concluded that, "a number of policemen were guilty of misconduct, which involved assault and battery, malicious damage to property...and the use of provocative sectarian and political slogans". After this point, barricades were set up in the Bogside and vigilante patrols organised to keep the police out. It was at this point that the famous mural with the slogan "You are now entering Free Derry" was painted on the corner of Columbs Street by a local activist named