The Russian opposition leader Alexei Navalny died Friday at the age of 47, in a Siberian prison camp. Long an opponent of Vladimir Putin and the ruling United Russia Party, Navalny organized huge anti-government protests, ran for office, and worked tirelessly to expose corruption at every level of the political hierarchy. In 2021, Navalny was poisoned with a Soviet-era nerve agent and nearly died. After being treated successfully in Germany, he returned to Russia to continue his work, fully aware of what was ahead of him. He was arrested at the airport and has been incarcerated ever since.