On May 5, 1981, imprisoned Irish-Catholic militant Bobby Sands dies after refusing food for 66 days in protest of his treatment as a criminal rather than a political prisoner by British authorities. His death immediately touched off widespread rioting in Belfast, as young Irish-Catholic militants clashed with police and British Army patrols and started fires.

On March 1, 1981 - the fifth anniversary of the British policy of criminalization - Bobby Sands launched a new hunger strike. He took only water and salt, and his weight dropped from 155 pounds to 95 pounds. After two weeks, another protester joined the strike, and six days after that, two more. On April 9, in the midst of the strike, Sands was elected to a vacant seat in the British Parliament from Fermanagh and South Tyrone in Northern Ireland. Parliament subsequently introduced legislation to disqualify convicts serving prison sentences for eligibility for Parliament. His election and fears of violence after his death drew international attention to Sands' protest. In the final week of his life, Pope John Paul II sent a personal envoy to urge Sands to give up the strike. He refused. On May 3, he fell into a coma, and in the early morning of May 5 he died. Fighting raged for days in Belfast, and tens of thousands attended his funeral on May 7.

After Sands' death, the hunger strike continued, and nine more men perished before it was called off on October 3, 1981, under pressure from Catholic Church leaders and the prisoners' families. In the aftermath of the strike, the administration of British Prime Minister Margaret Thatcher agreed to give in to several of the protesters' demands, including the right to wear civilian clothing and the right to receive mail and visits. Prisoners were also allowed to move more freely and no longer were subject to harsh penalties for refusing prison work. Official recognition of their political status, however, was not granted.