Protests have begun in the Russian Far East to release Mr. Navalny, a leader of opposition forces who have criticized Russia's Putin administration, who has been imprisoned in prison and is said to be in poor health.
Protests are scheduled to take place all over Russia, and the administration plans to crack down on it as an unauthorized activity.
In Vladivostok, the Russian Far East, protests began at around 7 pm Japan time, calling for the release of Mr. Navalny, the leader of opposition forces in prison.
As the authorities increased their vigilance, participants marched through the city center, saying, "Russia without Putin" or "Free Navalny."
A 21-year-old woman who participated said, "There is no freedom of speech in this country. I want to claim my rights in my own words. I want the authorities to listen to us."
Mr. Navalny, who was attacked by a nerve agent of chemical weapons last year and survived, was imprisoned in prison in February, and the rebels were affected by the abuse he received in the prison and the hunger strike that started at the end of March. He points out that his health is rapidly deteriorating.
Protests are scheduled to take place all over Russia after this, but the administration is planning to crack down on it as an unauthorized activity, and confusion is expected.