1990 Strangeways Prison riot April, and 40 prisoners held a prison officer hostage for twenty-four hours after taking over a hall at HM Prison Shotts on 10 April. On 12 April, two teenage remand prisoners at HM Prison Swansea barricaded themselves into their cell for seventeen hours, and on 22 April between 80 and 100 remand prisoners staged an eighteen-hour rooftop protest at HM Prison Ashfield in Pucklechurch. On 2 April newspapers reported a weekend of "anti-authority violence", as in addition to the Strangeways riot the Poll Tax Riot had occurred in London on 31 March. Reports of the violence at Strangeways included kangaroo
Attica Prison riot officers and four inmates killed being attributed to the prisoners. "New York Times" writer Fred Ferretti said the rebellion concluded in "mass deaths that four days of taut negotiations had sought to avert". As a result of the riot, a number of changes were made in the New York prison system to satisfy some of the prisoners' demands, reduce tension in the system, and prevent future such rebellions. As of 2018, there has never been another riot of anywhere near the scale of the Attica rebellion in the United States. At approximately 4:20 a.m. on Thursday, September 9, 1971, 5