The footage shows a large number of people bound with their heads forced to the ground.
Israel's far right National Security Minister has posted footage online of the people detained from the flotilla heading for Gaza.
The images show detainees being bound and being dragged in Ashdod Port.
Ben Gvir said 'welcome to Israel' in the post on X. 14 Irish people have been detained by the Israelis, including Moate's Louise McCormack.
Foreign Affairs Minister Helen McEntee says the behaviour of Ben Gvir and the Israeli Government is "utterly appalling and unacceptable," and the Irish embassy has raised the matter with authorities there, demanding proper treatment of Irish citizens.
Among those being held is the sister of President Catherine Connolly, Dr Margaret Connolly.
Her husband Independent Councillor in Sligo Declan Bree says families are left in the dark about the welfare of their loved ones:
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