The son of a murdered gangland figure is suspected of driving at a man on a footpath after asking if he was Ukrainian and threatening to put him "over the bonnet".
Footage of the sickening racist attack has been widely circulated on social media and is believed to have happened on Wednesday. It comes as another anti-asylum seeker protest was held in Ballymun, north Dublin, last night.
In the footage, the young man driving a car pulls down his passenger window on Church Road, Mulhuddart in Dublin 15, and asks the pedestrian if he is Ukrainian. The driver shouts: "You speak English? Are you an immigrant are ya? Are you Ukrainian? You fresh off the boat are ya?"