Tens of thousands of individuals have taken to the roads in Brazil to demonstrate against the authorities.
Organisers said 50,000 people – a record number – turned out in Sao Paulo alone for seventh day of demonstrations against the new President Michel Temer.
After Dilma Rousseff was removed from the presidency in an impeachment trial Mr Temer took office.
Police used tear gas, stun grenades and water cannon as clashes broke out at the ending although the rally started calmly.
They said they have been forced to take the measures to avoid vandalism.
Several people were injured including a BBC journalist.
Some protesters responded by throwing bottles and stones at riot police, and building and setting fire to barricades.
Mr Temer said the protests were “little groups, not popular movements of any size”.
An organization of riot police unexpectedly determined to change course.
I was wearing a BBC Brazil vest and badge and I raised my hands and said I was press.
My forearm turned purple and swelled up. The phone I was using fell to the earth and the display was broken. Fortunately, the strike I took to the torso was cushioned by the vest I was wearing. I wore a helmet and gas mask – for covering demonstrations complying with internal BBC rules.