Gardaí are investigating last night's incident in which a number of people were injured in a disturbance at the gates of Leinster House.
The demonstration at the Dáil was in connection with the Government's plans to inject billions of euro into the country's banks.
A group of 500 people were protesting when around 100 broke away and tried, but failed, to gain entry to the grounds.
A number of gardaí drew their batons as they forced the group back. As the scuffle broke out organisers appealed for calm.
Up to 12 gardaí stood at the large iron gates at the front of Leinster House.
Several speakers hit out at the Government's handling of the economic crisis.