Just at the metro station The Revolution Square hosted an opposition rally - white balloons were released into the air in the metro lobby. All participants of the action safely left by train, but Mikhail Sazonov, who was taking pictures of the action, was detained. UPD 10.00 According to Sazonov himself, after being taken to the police station on Baumanskaya, he was released by the head of the department with an apology.