Rioting erupts in Derry following the introduction of internment by Northern Ireland Prime Minister Brian Faulkner.
On the morning of 9 August 1971 the Prime Minister of Northern Ireland Brian Faulkner makes the formal announcement that the power to imprison suspects without trial has been exercised.
Rioting followed and during the 9 August and the early hours of 10 August 1971, Northern Ireland experiences the worst violence since August 1969. Thousands of families flee their homes, many of them going crossing the border.
On the streets of Derry young men throw missiles at British troops. The violence centres at the Rosemount Royal Ulster Constabulary (RUC) Barracks which faces a day long barrage of stones and petrol bombs. A group of young men tear up a Union Jack flag.
An RTÉ News report broadcast on 9 August 1971.
