Protesters around the world rally for Russian opposition leader Navalny

Alexei Navalny is Russia's most prominent opposition figure. He's known for his strong stance on corruption and openly criticizing the Russian government.
Navalny was first barred from running for office, then poisoned with a chemical nerve agent and later imprisoned. To this day, he remains behind bars and faces further charges that could see him locked up for almost three decades.
Today is Navalny's birthday. In Cities around the world, people are gathering on central squares to show their support for Navalny and Russia's opposition.