Security forces in Belarus detained dozens of protesters on Sunday (October 11).
Firing rubber bullets and letting off water cannons spraying colored water to mark people for arrest.
Police wearing balaclavas were seen dragging away protesters into unmarked vans and beating them with batons.
It was a rally that drew thousands onto the streets of the capital and other cities across the country.
Protests in Belarus have entered their third month and people have taken to the streets every week -- demands include leader Alexander Lukashenko to step down and a new election, after a vote in August that was widely seen as rigged.
Sunday's violence followed a meeting Lukashenko held on Saturday in a Minsk jail with detained opposition leaders, an unusual event that prompted some opposition activists to believe he was preparing to make concessions.
In a rare compromise, two people who had taken part in the meeting were released on Sunday, state tv reported.
Security forces have detained more than 13,000 people during the post-election crackdown and Opposition leader Sviatlana Tsikhanouskaya, who fled to Lithuania, has also continued calls for new elections and for all political prisoners to be freed.