In the capital, Ankara, police fired tear gas and pressurized water to break up a similar protest by a group of about 200 people, the Dogan news agency reported.
Turkey has been hit by a wave of protests this month that were ignited by a brutal police crackdown on a peaceful environmental sit-in at a park near Taksim. The demonstrations soon turned into a wide outpouring of discontent with Prime Minister Recep Tayyip Erdogan's government. Four people -- three demonstrators and one police officer -- have been killed and thousands injured.
The protesters also denounced the killing of a Kurdish demonstrator by paramilitary police in a mainly Kurdish town on Friday.
Police allowed protesters to chant slogans for some two hours before issuing a warning for them to disperse. They then moved in, pushing the crowd away from the square. They arrested several people in the process, including some foreign nationals, the state-run Anadolu Agency reported.
The government said it had launched an investigation into the incident, which came as autonomy-seeking Kurdish rebels are withdrawing from Turkey as part of peace talks with the Turkish government.
A rebel commander last week criticized Turkish government efforts to build new military posts amid the peace efforts.