Margaretta D'Arcy is not a war criminal. Nor is she a human rights abuser, or the commander of an invading army. But she has spent many years drawing attention to the fact that these type of people pass through Shannon Airport regularly. The legally and morally correct response from the Irish police would be to investigate this complicity in wrongdoing at Shannon. Instead they imprisoned 79 year old Margaretta because she wouldn't promise to stay away from the airport.
A peace activist who draws too much attention to US and NATO injustices is locked up in supposedly neutral Ireland, while the country's morally corrupt government continues to bend over backwards to support their imperialist plundering. Ireland is obligated under customary international laws on neutrality to not allow US troops involved in wars to transit through Irish territory, and to arrest any such soldiers found on Irish territory. But the government not only refuses to do this - it even welcomes them.