Alexei Navalny is a well-known critic of President Putin’s regime and has spent several years fighting corruption in Russia. He has been arrested numerous times for his activism and was recently sentenced to two years and eight months in prison on charges he says were fabricated to thwart his political aspirations. Navalny was poisoned with a nerve agent in August 2020 and nearly died. He blames this attack on Putin’s government.
Regarding the queues in Moscow, as reported by many media, after Navalny’s arrest and sentencing, his supporters have taken to the streets to protest. It’s important to note, in this context, your headline seems a bit misleading. Navalny is not dead, and thus there would be no grave to visit. He is currently incarcerated serving a 2.8-year sentence. Perhaps the queues mentioned refer to protests or gatherings in support of Navalny.
Please let me know if you need more precise information.