Tunisians took to the streets in protests after a video showing a police officer assaulting a shepherd went viral online.
The video had shown the police officer scolding and pushing a shepherd whose sheep had entered the governerate headquarters in Siliana, Northern Tunisia.
After going viral online, violent protests broke out in no fewer than six Tunisian cities on Saturday night, including the capital Tunis and the coastal city of Sousse.
Security forces fired tear gas to disperse hundreds of protesters who blocked roads and burnt tyres in Sousse, where young men also broke into shops.
Clashes were reported in the nearby city of Kalaa Kebira and in several areas of Tunis, including Ettadhamen, Mallassin and Fouchana and Sijoumi.
There were also night protests and riots in the northern towns of Kef, Bizerte and Siliana.
Activists said that it was unacceptable to harm the dignity of any citizen, a decade after Tunisians revolted against injustice and oppression.
The Public Prosecution office opened an investigation into the incident.