The gathering in Cork city centre passed off without major incident on Saturday afternoon.
A similar event ended in violent scenes in the capital Dublin last weekend.
A woman takes part in a demonstration against lockdown restrictions organised by the People’s Convention in Cork city centre (Niall Carson/PA)
There was a heavy police presence and some shops boarded up their windows as an estimated crowd of several hundred gathered on Patrick Street in Cork.
Public gatherings are currently banned under the coronavirus regulations.
Garda said more than 200 officers were involved in Saturday’s policing operation.
Two men were arrested in Cork city, one for a breach of coronavirus regulations and the other for public order offences.