Somewhere back down the thread Jim Carroll was complaining about injustices heaped on the Irish up North and he specifically mentioned Diplock Courts and mass internment without trial.

But of course Great Britain did not introduce non-jury trial or mass internment to Ireland did they Jim - Your pal Eamon de Valera did that in the late 1930s - ever heard of such a thing as the Special Criminal Court? Article 38 of the Constitution of Ireland? Or the "Offences against the State Act 1939". When the IRA mounted its S-Pan bombing campaign on the British mainland in the late 1930s de Valera had IRA members rounded up and interned - guess where? - The Curragh. Later after the Second World War when the IRA mounted their cross-border campaign of 1956 to 1962 internment was introduced again as evidenced by the following:

James Dillon, speaking in the Dáil in April 1959, felt that an interesting survey would be an enquiry into 'the places of education of the internees recently released from the Curragh Camp'

Just thought that I'd put that in in case you claimed that none of this ever happened. So clear precedents set for both in Ireland when applied to internal security problems.