Russian troops have dispersed a demonstration in the occupied southern city of Kherson by firing on protesters, media reports say.
Video footage has appeared on social media showing the protesters on a city square, with people running and the sound of automatic gunfire.
Some reports say stun grenades were also used.
Several people are reported to have been injured.
The city has seen regular protests against the occupation since Russian troops took over at the beginning of March.
It is the largest of only a handful of cities captured by Russian forces since the invasion last month.