The IRA were actually murdering people in Northern Ireland, not just "shooting up the landscape", and as already pointed out "we" behaved worse, in addition we had a level of privacy invasion at NI borders and within NI borders the rest of the UK and Ireland have, even now, no experience of. You don't get a full pat down when you visit Marks & Spencer, you don't walk to school with a soldier looking at you down the barrel of a rifle.