IRA is ok because they're not Muslim. Got it.
Welcome to the idiot club, ITC. Some probably thought you always resided there, but I didn't.
It has nothing to do with Religion. Whereas the IRA differed in their religion from the Church of England, they had definable political objectives. They never chopped off peoples heads, burnt them alive, raped on a massive scale.
The fact that I have to point this out is sad....but not surprising.