Six men were arrested after campaigners against the property tax occupied a number of local authority buildings yesterday evening.
Gardaí were called in after activists from the Campaign Against Household and Water Taxes disrupted council meetings in Dublin and Galway.
Five people were arrested during a demonstration in Tallaght and another was arrested at Galway City Hall.
The protests ended quickly though.
The new property tax, which will replace the household charge, is due to come into force on July 1st.