You may have seen the video footage of John Rooney, 22, which shows him being dragged upside down by gardai, forcing his head to scrape along the ground, outside the US embassy on Saturday during a protest in support of the people of Gaza.
Mr Rooney then began to have an epileptic seizure and friends needed to give him medicine.
The Irish Mirror has since reported that Mr Rooney plans to make a complaint to the Garda Síochána Ombudsman Commission over the incident.