May 1 demonstration marking the Day of the Working People's International Solidarity on Moscow's Red Square. From left: President of the Presidium of the USSR Supreme Soviet (Parliament) Nikolai Podgorny, General Secretary of the Central Committee of the Communist Party of the Soviet Union Leonid Brezhnev and Chairman of the Council of Ministers (Government) of the USSR Alexei Kosygin stand on the rostrum of the Lenin Mausoleum.