Misperception. There's plenty of attacks on Catholics by Protestants. It's true, however, that the majority of attacks on security forces are by Catholics, and the IRA murdered far more people than any of the loyalists ever did.
Could this be a reaction to Blair's (and predecessors'since Thatcher) continual appeasement of Adams & co, ignited by a parade dispute or am I attributing "depth" to something more basic ?
"the IRA murdered far more people than any of the loyalists ever did"
I guess that's what we would expect to hear from a English Nationalist....