The rights or wrongs of the PIRA's case is not what we are discussing here. Personally, I view them as terrorist mass murderers, and no doubt others in this discussion view them as heroic freedom fighters. Whatever your viewpoint happens to be, the one fact that you can't deny is that the PIRA killed and injured thousands of people, many of whom happened to be innocent civilians. It is essential that this information is included in the lead of this article so readers are left in no doubt as to what the PIRA "achieved" during their campaign.