Gardaí said they were alerted to an incident on the N11 flyover footbridge at Kilmacanogue, Co Wicklow, as a result of a number of complaints received from members of the public shortly after 4pm.
Gardaí attended the scene and arrested a woman in her 50s under the Criminal Justice and Public Order Act, 1994. She is currently in Bray Garda station.
According to The Irish Times, the woman is an anti-facemask activist who was trying to hang large banners over the edge of the footbridge.
During the livestream she called the gardaí “traitors to the Irish people” and warned them they will “go viral”.
The garda asked one of the protesters for her name and address under the Public Order Act which she refused to give.
Gardai said investigations are ongoing.
