Russian riot police officers block a street during a rally in support of jailed Kremlin critic Alexei Navalny, in central Saint-Petersburg 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 Olga Maltseva/AFP Photo)
