The Troubles: On Bloody Sunday, members of the British Parachute Regiment shot 26 civil-rights protesters in Derry, Northern Ireland, killing at least 13 people.

The Troubles were an ethno-nationalist conflict in Northern Ireland that lasted for about 30 years from the late 1960s to 1998. Also known internationally as the Northern Ireland conflict, it began in the late 1960s and is usually deemed to have ended with the Good Friday Agreement of 1998. Although the Troubles mostly took place in Northern Ireland, at times violence spilled over into parts of the Republic of Ireland, England, and mainland Europe.

Bloody Sunday, or the Bogside Massacre, was a massacre on 30 January 1972 when British soldiers shot 26 unarmed civilians during a protest march in the Bogside area of Derry, Northern Ireland. Thirteen men were killed outright and the death of another man four months later was attributed to gunshot injuries from the incident. Many of the victims were shot while fleeing from the soldiers, and some were shot while trying to help the wounded. Other protesters were injured by shrapnel, rubber bullets, or batons; two were run down by British Army vehicles; and some were beaten. All of those shot were Catholics. The march had been organised by the Northern Ireland Civil Rights Association (NICRA) to protest against internment without trial. The soldiers were from the 1st Battalion of the Parachute Regiment, the same battalion implicated in the Ballymurphy massacre several months before.

The Parachute Regiment, known colloquially as the Paras, is the airborne and elite infantry regiment of the British Army. The first battalion is part of the Special Forces Support Group under the operational command of the Director Special Forces. The other battalions are the parachute infantry component of the British Army's rapid response formation, 16 Air Assault Brigade. Alongside the five regiments of Foot Guards, the Parachute Regiment is the only infantry regiment of the British Army that has not been amalgamated with another unit since the end of the Second World War.