Chanting "Russia will be free!" and "This is our city!," up to 2,000 protesters marched through one of Moscow's thoroughfares.

Russia’s media oversight agency said Sunday that it wanted Google to stop YouTube users from posting information about unsanctioned political protests or the Russian government would feel free to retaliate against the American company.

Doctors at the hospital treating him have yet to publicly disclose their diagnosis and the precise cause of his symptoms remains unknown.