Around 50 people from the Russian LGBT group Coming Out took part in a public Day of Silence action April 16 in St. Petersburg.
Organizers said they were protesting "against the silencing of discrimination, humiliation and violence faced by LGBT people and their allies."
They put posters on university bulletin boards and faxed information to government officials, university deans and media outlets on April 15.
Then they taped their mouths shut and staged a "flash mob" the next day on the main boulevard Nevsky Prospect, distributing around 1,000 leaflets.
"The reaction of most people during the campaign was positive to the extent that some passersby even joined the flash mob," the group said. "A minor run-in with the police ended on a friendly note, with the police and the participants taking photos of each other."
There are videos.