A Russian police officer speaks with an opposition supporter holding a poster reading “No war, repressions and tortures!” during a rally in support of jailed Kremlin critic Alexei Navalny in Vladivostok on April 21, 2021. Navalny's team called for the demonstrations in more than 100 cities, after the opposition figure's doctors said his health was failing following three weeks on hunger strike. (Photo by Pavel Korolyov/AFP Photo)





A woman argues with police officer during a protest in support of jailed opposition leader Alexei Navalny in Ulan-Ude, the regional capital of Buryatia, a region near the Russia-Mongolia border, Russia, Wednesday, April 21, 2021. Navalny's team has called for nationwide protests on Wednesday following reports that the politician's health was deteriorating in prison, where he has been on hunger strike since March 31. Russian authorities have stressed that the demonstrations were not authorized and warned against participating in them. (Photo by Anna Ogorodnik/AP Photo)





Russian policemen walk on Manezhnaya Square in preparation for a possible opposition rally and prevention of riots in Moscow, Russia, 21 April 2021. Unauthorized rallies in support of Alexei Navalny are expected to be held throughout Russia. Russian opposition leader Alexei Navalny has been transferred from the penal colony No. 2 (IK-2) in Pokrov, Vladimir region, to the regional prison hospital in IK-3 in Vladimir for receiving vitamin therapy. The decision was taken amid Navalny's hunger strike and announced by his team members fearing for his life. (Photo by Yuri Kochetkov/EPA/EFE)





People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia on April 21, 2021. (Photo by Maxim Shemetov/Reuters)





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. Police rounded up more than a thousand protesters as Russians in dozens of cities rallied behind Kremlin critic Alexei Navalny over his failing health in jail. (Photo by Anton Vaganov/Reuters)





Policemen stand in preparation for a possible opposition rally as Russian President Vladimir Putin seen on television screen during his annual state of the nation address, in Khabarovsk, 6,100 kilometers (3,800 miles) east of Moscow, Russia, Wednesday, April 21, 2021. (Photo by Igor Volkov/AP Photo)





Russian riot police officers block a street during a rally in support of jailed Kremlin critic Alexei Navalny, in Moscow on April 21, 2021. Jailed Kremlin critic Alexei Navalny's team called for demonstrations in more than 100 cities, after the opposition figure's doctors said his health was failing following three weeks on hunger strike. (Photo by Dimitar Dilkoff/AFP Photo)





Police officers block a street as supporters of jailed Russian opposition politician Alexei Navalny hold a rally in Moscow, Russia on April 21, 2021. (Photo by Shamil Zhumatov/Reuters)





Police officers stand next to demonstrators during a rally in support of jailed Russian opposition politician Alexei Navalny, in Moscow, Russia, April 21, 2021. (Photo by Maxim Shemetov/Reuters)





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. (Photo by Maxim Shemetov/Reuters)





Demonstrators are taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia on April 21, 2021. (Photo by Anton Vaganov/Reuters)





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. (Photo by Maxim Shemetov/Reuters)





People attend a rally in support of jailed Russian opposition politician Alexei Navalny in Moscow, Russia, April 21, 2021. (Photo by Maxim Shemetov/Reuters)





Demonstrators are taken away by law enforcement officers during a rally in support of jailed Russian opposition politician Alexei Navalny in Saint Petersburg, Russia on April 21, 2021. (Photo by Anton Vaganov/Reuters)





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 on April 21, 2021. (Photo by Anton Vaganov/Reuters)





Russian policemen stand in preparation for a possible opposition rally in support of jailed opposition leader Alexei Navalny in Khabarovsk, 6,100 kilometers (3,800 miles) east of Moscow, Russia, Wednesday, April 21, 2021. Navalny's team has called for nationwide protests on Wednesday following reports that the politician's health was deteriorating in prison, where he has been on hunger strike since March 31. Russian authorities have stressed that the demonstrations were not authorized and warned against participating in them. (Photo by Igor Volkov/AP Photo)





A detained protestor looks on from inside a police van during a protest in support of jailed opposition leader Alexei Navalny in St. Petersburg, Russia, Wednesday, April 21, 2021. A human rights group that monitors political repressions said at least 400 people were arrested across the country in connection with the protests. Many were seized before protests even began, including two top Navalny associates in Moscow. (Photo by Dmitri Lovetsky/AP Photo)





A supporter waves Russian flag and shouts slogans during the opposition rally in support of jailed opposition leader Alexei Navalny in Moscow, Russia, Wednesday, April 21, 2021. Police across Russia have arrested more than 180 people in connection with demonstrations in support of imprisoned opposition leader Alexei Navalny, according to a human rights group. (Photo by Alexander Zemlianichenko/AP Photo)





Street lights are reflected in the helmets of riot police blocking traffic during the opposition rally in support of jailed opposition leader Alexei Navalny in Moscow, Russia, Wednesday, April 21, 2021. (Photo by Alexander Zemlianichenko/AP Photo)





A police officer observes an unsanctioned rally held by opposition activist Alexei Navalny's supporters in Lenin Square in Khabarovsk, Russia on April 21, 2021. (Photo by Denis Dmitriyev/TASS)