Onboard the coach near the border, the Gardai question a young man about where he lives. He is Algerian - a student, he says. The police are suspicious and he is taken to the detention vehicle while his identity is checked.
A veteran of war crimes investigations in post-war Bosnia - as part of an EU police team - Det Ch Supt Minnock knows well the violence and poverty that drives migration.
“This is growing at such a scale because of the conflict and instability right across the world,” he says.
Public concern over immigration is closely linked to Ireland’s chronic housing problem. The Republic now has the worst record in the EU for housing young people.
The CEO of the Irish Refugee Council, Nick Henderson, says the crisis is a “perfect storm”, created in part by the failure to build enough housing stock over decades, and a government unprepared for the upsurge in asylum seekers - known in Ireland as International Protection Applicants (IPAs) - needing help with accommodation.
“[The government] is only able to provide accommodation through private contractors. That, coupled with an increase in the number of people seeking protection in Ireland, and against the background of a housing crisis has meant, in effect, that Ireland's asylum reception system has really collapsed.”