Citing proper attribution for a song is never wrong. It is the way it's done that causes the offense being discussed here (as I understand it), Malcolm.

If we are to have a reasonably open mind, then that means accepting the fact that most of the Irish/British or Irish/English "arguments" are rooted, at least partially, in people's (usually unexamined) prejudices about the other.

I'm not saying that doesn't cut both ways, it does. But there are differences too, as I pointed out in my analogy about whites treatment of blacks in the US. Irish bigotry towards the English is a result of being on the shallow end of the colonial relationship, and living with the British as occupiers for centuries. OTOH, British bigotry towards the Irish on the folk scene seems, to me, to be rooted more in recent politics of the Troubles, and the fact that Irish music has, in the past few years, enjoyed more popularity than English and Scottish music has. So it really just seems to be more about jealousy, than anything else.