Five people were arrested and charged after what gardaí called a "public gathering" in Cork city centre this morning.
Gardaí said the gathering "quickly grew in size and was joined by several HGVs and tractors, which moved slowly through the city centre for a time".
They said the Public Order Unit and uniformed gardaí engaged with drivers, who agreed to disperse.
"Directions were also issued under the Public Order Act to a number of individuals instructing them to leave the roadway, some failed to comply," said An Garda Síochána.
Two men in their 50s, a man in his 40s and a man in his 30s were arrested.
A woman in her 40s was also arrested.
"They were taken to a garda station in Cork city and later released, having been charged to appear before Cork District Court in the coming weeks," the gardaí said.
"The remainder of the crowd dispersed peacefully. No injuries were reported," they added.