H-Blocks
Prisoners convicted of scheduled offences after 1 March 1976 were housed in the eight new "H-Blocks" that had been constructed at Long Kesh, now officially HM Prison Maze. Prisoners without Special Category Status began protesting for its return immediately after they were transferred to the H-Blocks. Their first act of defiance, initiated by Kieran Nugent was to refuse to wear the prison uniforms, stating that convicted criminals, and not political prisoners, wear uniforms. Not allowed their own clothes, they wrapped themselves in bedsheets. Prisoners participating in the protest were "on the blanket". By 1978 more than 300 men had joined the protest. The British government refused to yield. Prison guards soon refused to let the blanket protesters use the toilets without proper uniforms. The prisoners refused, and instead began to defecate within their own cells, smearing excrement on the walls. This began the "dirty protest". But again the new 1979 government of Margaret Thatcher did not respond.
Read more about this topic: HM Prison Maze