Maybe the Viking depredations were what caused the Irish to become heavy drinkers.
Then they shipped them to where they wanted them to work ~ e.g. Norway, Iceland, Greenland, Denmark ~ DENMARK?
Sure, why not. They needed slaves, particularly those lucious red headed babes from Ireland.
In fact, all the Scandinavians are pretty much descended from the Irish and Welsh, and from the earlier Baltic peoples in the region.
In fact, the Vikings carried things to such an extreme that almost all the Scots are also descended from the Irish invaders AND the Scandinavian invaders.
So who's this racist Dane who thinks he's some sort of pureblood Viking who can apoligize to the Irish?
Ain't no such thing!