Borders, belonging, identity, immigration and refugees in Ireland and Germany

Trace your family tree back far enough, and you'll likely find an immigrant or a refugee. Even seemingly homogenous populations, like Ireland's, have had plenty of them over time, coming in and going out. Germany is now integrating almost a million refugees who have come in over the past year. In the face of such changes, how do people in each country consider, expand or defend their identities?