Helmholtz Watson said:
Talk to a Republican and they will say that the English have suppressed and massacred them since forever and have no right to rule Ireland.
Talk to a Unionist and they will tell you that the IRA are terrorist baby-murderers and the overwhelming majority of Northern Ireland want to stay united with Britain.
I did type out a brief history trying to explain exactly why Ireland is so messed up, but it ended up being about 2000 words long, and missed a whole lot out, and was full of my unfunny jokes trying to liven it up a bit, so I deleted it.
people will say that "The Troubles" in Northern Ireland began in 1969 when a Catholic march turned bad, but to understand why the Catholic march was being held, you need to go a bit further back... to around the 1100's when England first tried to settle Ireland.
It's a real powderkeg issue, there are no easy answers, there is in fact no right answer that will satisfy everyone and do justice to everyone's rights. For centuries two groups of people have grown up living beside each other practising beliefs and traditions that antagonise the other, they live segregated and in fear of each other, and hold two completely incompatible beliefs backed by religious fervour about the only way to resolve the same issue.
The IRA pre-1921 could be argued to have at least had a valid political goal that represented the people and to have followed a moral code wherein they only planned to attack military institutions and did so for purely political gain. Interestingly enough exactly the same could be said of the Unionist paramilitary divisions: strictly pre-1921 of course.
The IRA of the Troubles were not following any sort of moral code. They bombed civilian areas of no military value whatsoever. They abducted tortured and murdered innocent civilians purely for the crime of being Protestant, they used fuel laundering, organised crime, Mafia style profiteering off their own local businesses, and drug running to fund their diabolical regime, and their own pockets. These were cut throat killers who cared nothing for their victims, and viewed them as less than people. And if you think I am being unfair or biased, I believe exactly the same thing about the Unionist paramilitaries, in fact, evenmoreso, since I have seen them firsthand destroy people and communities with their drug pushing and profiteering, not for any political reason, but so they can fund the most honourable cause of themselves.
You mentioned Bobby Sands, well just understand this. You do not get involved with a terrorist organisation without cracking a few skulls. He was suspected of an awful lot, but never convicted because of lack of evidence (no DNA stuff back in those days.) Eventually he was caught with a gun that had been used in a shooting against police, and I think there were a few other charges when they got the ball rolling. He was caught with several handguns, and involved in a few shootings, those are not the actions of an innocent man.
Oh, and just for fun here's some pictures of what our current First Minister and Deputy First Minister got up to about 30 years ago...