Russian police officers detain a participant of an unauthorized opposition rally in the center of Saint Petersburg on Monday, June 12.
A young girl reacts as her friend is detained by police during a demonstration in downtown Moscow.
A line of riot policemen block the entrance to Tverskaya street as an unauthorized opposition rally takes place in central Moscow.
Russian police officers detain a flag-waving rally participant in Saint Petersburg.
Russian police officers detain a participant of an unauthorized opposition rally in Tverskaya street in central Moscow.
A woman holds a poster bearing the portrait of Russian President Vladimir Putin which reads "that's all" during an unauthorized opposition rally in centre of Saint Petersburg.
Police detain Russian opposition activist Ilya Yashin in Moscow.
Yulia Navalnaya, wife of opposition leader Alexey Navalny, tweeted a photo of his Monday arrest, which coincided with the protests.
Police detain a protester during anti-corruption rally in St. Petersburg.
People chant slogans during the rally in Moscow.