For the record, my mother was born in Bangor and raised in Belfast. She was Catholic and was pretty righteous about the evil of murder, even when the IRA committed it. I also must have missed the "you must support the IRA if you are a Catholic" dogma in my Baltimore Catechism.
As for as your assertions that condemnation of such murders were not reported, you missed the Pope denouncing IRA bombings here's an article to refresh your memory.
Pope Denounces Bombers - from the Catholic Herald Archive.
I have more family in Northern Ireland than anywhere else and they weren't fond of IRA terrorism either, even though my cousin was subjected to an evisceration in Belfast for the crime of being a Catholic in the wrong place and wrong time. (He was trying to see his girlfriend when a group of thugs seized upon him.) But that was thirty years ago.
I'm glad you can pass the peace centre in Warrington with no fear of attack. In terms of your personal safety, the IRA is apparently no longer a relevant threat and that's a good thing. In this country you hear the term "IRA" and one thinks of a financial instrument used for retirement. The same relevance could be said for Oliver Cromwell. But that was 360 years ago.
You regard ISIS and Boko Haram as "criminal gangs". That puts them in the category of the half dozen thugs that murdered my cousin. You don't seem to have a solid grasp on their scale.
The problem is they are big and growing. They are on the attack NOW. And while your faith may be nominally Christian, unless it is their unique brand of Islam they have announced they are committed to your destruction.
I would invite you to examine their compassion and reason in the beheading of Mr. Foley, the massacre of the Yazdis, (by the way they are reportedly selling 500 Christian women were abducted from Mosul for sex slaves), and murder of 300 Sunni scholars. Then there are the other miscellaneous beheadings, crucifixions and murders also going on as you read this.
The cold reality is they are multi-national armies that are committing genocide as I write this. Their size is approaching that of the current active duty force of the UK. They have over 400 UK nationals in their ranks. After the unfortunate murder of Saudi student Nahid Almanea, an alleged ISIS spokesperson has called for civilian retribution on the citizens of the UK.
So Nick the answer is an ISIS chapter of Bolton Lads and girls Club? Let me know how that works out.