Demonstrators carry political slogans on the International Day of Workers in 1917. In the hall of the Polytechnic Museum there is a meeting of the People's Will, dedicated to the 10th anniversary of liberation from prisons and exile, speakers: V.V. Leonovich, E.M. Yaroslavsky, M.V. Frolenko, V.V. N. Figner. Presidium, Professor Weisbrod's speech at the IV All-Union Congress of Physicians. Participants of the aerosled run Moscow-Leningrad-Vologda-Moscow at a distance. Doctors of the veterinary team provide assistance to Zyryan reindeer herders in Ust-Usa. Workers of the Moschway factory # 10 named after K. Zetkin while working on the conveyor. Participants of the ski run for 200 km go through the Sverdlovsk region. Hockey players and spectators during the ice hockey match RSFSR-Sweden in Leningrad.