People's families and homes "should be out of bounds", Taoiseach Simon Harris said after protesters held a demonstration outside his house on Thursday evening.
There were about 16 protesters at the house, some of whom had held signs which said 'South Dublin Says No Close The Borders'.
Mr Harris was not present at the time as he was attending a funeral. His family were at home at the time of the incident.
Speaking from Belfast yesterday, Mr Harris said: "Whether it's my home, whether it's the home of the leader of the Opposition or anybody, I have a very clear view, I irk when I even hear it described as protest because to me it's not protest and we shouldn't in any way seek to normalise this.
"It is behaviour that can be intimidating, it can be deeply upsetting and I think it's important that people's families and people's homes are always out of bounds.
"There are laws and we recently asked the gardaí were the laws adequate in terms of being able to protect people, their families and their homes - the gardaí have responded that they are.
"So therefore I think we need to continue to support the gardaí in making sure that action, no matter whose home it is, is taken because nobody's family deserves to experience it."
Gardaí were called to the scene by neighbours. There were no arrests.
Speaking after meeting the Taoiseach in Stormont yesterday, Northern Ireland's First Minister Michelle O'Neill said that the protest was "totally inappropriate".
"The Taoiseach has two young kids, and I think your home should be your sanctity, and I don't think that there's any tolerance, there shouldn't be any tolerance for that type of attack on someone's home," she said.
Additional reporting: David Murphy
