A man is taken away by a law enforcement officer during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

Participants hold placards during a rally in support of jailed Russian opposition politician Alexei Navalny in Vladivostok, Russia April 21, 2021. Placards read: "Freedom to political prisoners" (L) and "No to war, repression and torture!"

Police officers stand next to demonstrators during a rally in support of jailed Russian opposition politician Alexei Navalny, in Moscow, Russia, April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

Supporters of jailed Russian opposition politician Alexei Navalny hold signs reading "Freedom for Navalny" as the Kremlin is seen on the background during a rally in Moscow, Russia April 21, 2021.

Police officers block a street as supporters of jailed Russian opposition politician Alexei Navalny hold a rally in Moscow, Russia April 21, 2021.

Law enforcement officers stand guard during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

People hold their lit up mobile phones during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

A demonstrator is taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

A woman holds up an image of Russian President Vladimir Putin that reads 'Should the thief be in the Kremlin?' during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

A man waves the flag of Russia during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021. Image for illustrative purposes.

A demonstrator sits inside a police vehicle after being detained during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

A demonstrator holds up a sign reading "today they kill Navalny, tomorrow they kill me" during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

A demonstrator is taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

Demonstrators are taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

A participant holds balloons during a rally in support of jailed Russian opposition politician Alexei Navalny in Vladivostok, Russia April 21, 2021.

A woman holds a placard reading "Putin is a murderer" during a rally inA supportA of jailed Russian opposition politician AlexeiA Navalny in Omsk, Russia April 21, 2021.

A demonstrator flashes the victory sign while being detained by law enforcement officers during a rally inA supportA of jailed Russian opposition politician AlexeiA Navalny in Tomsk, Russia April 21, 2021.

People march during a rally in support of jailed Russian opposition politician Alexei Navalny in Vladivostok, Russia April 21, 2021. The placard reads: "No to war, repression and torture!"

A man holds a placard reading ''Freedom to Navalny'' during a rally in support of jailed Russian opposition politician Alexei Navalny, as the Kremlin is seen in the background, in Moscow, Russia April 21, 2021.

A woman holds up an image of Russian President Vladimir Putin that reads 'Should the thief be in the Kremlin?' during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

A woman holds a placard reading "Putin is a murderer" during a rally inA supportA of jailed Russian opposition politician AlexeiA Navalny in Omsk, Russia April 21, 2021.

Demonstrators march during a rally inA supportA of jailed Russian opposition politician AlexeiA Navalny in Omsk, Russia April 21, 2021.

Law enforcement officers stand guard as demonstrators march during a rally inA supportA of jailed Russian opposition politician AlexeiA Navalny in Omsk, Russia April 21, 2021.

Police officers carry fences as demonstrators attend a rally in support of jailed Russian opposition politician Alexei Navalny, in Moscow, Russia, April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

A police officer stands in front of the Kremlin during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

People hold their lit up mobile phones during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

Police officers block a street as supporters of jailed Russian opposition politician Alexei Navalny hold a rally in Moscow, Russia April 21, 2021.

A protester holds a Russian flag during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

Supporters of jailed Russian opposition politician Alexei Navalny hold a Russian flag during a rally in Moscow, Russia April 21, 2021.

Law enforcement officers stand guard during a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

Demonstrators are taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia April 21, 2021.

People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021.

Police officers walk past the Kremlin during a rally in support of jailed Russian opposition politician Alexei Navalny, in Moscow, Russia, April 21, 2021.