"...tell the Irish to move to the Republic...."

They are only claiming what is theirs. The suppression of the Irish by the English, notably by Elizabeth I, especially in the "Revolt of the Earls," begun in the 1590's, sounded the death knell for Gaelic societies and Gaelicized Ireland. Today her actions (and Cromwell's) would be considered genocidal. The native Irish Catholic chieftains THROUGHOUT ALL of Ireland were dispossessed, the bards banned, the warriors forced to abandon traditional dress, the earls exiled, and the landholding and inheritance laws were redrawn in the English direction to favor Protestant Scots or English. The Irish masses were considered savages. By early 17th cent., out of a native population of a million and a half, five-sixth of them died of war, famine or pestilence. After 1650's, 20 years after arrival of the Puritans in Boston, Irish Catholics, who held two-thirds of the good land for centuries, lost it when it was passed into the hands of Protestants.