Holiday demonstration on the streets of Bulgaria, dedicated to the Day of International Solidarity of Workers - May 1. Holiday demonstration on the streets of Hungary, dedicated on May 1. May Day demonstration in the streets of the GDR. Mongolia. May Day demonstration in Ulan Bator. Poland. Festive Day demonstration in Warsaw. Romania. Festive Day demonstration in the city of Bucharest. Austria. May Day demonstration on the streets of Vienna. May Day demonstration in the streets of Algeria. Kingdom. Demonstrators on the streets of London. Italy. May Day rally on the square in Rome. Mexico. Demonstrators on the streets of Mexico City. Netherlands. Demonstrators are held on the streets of Amsterdam. Meeting on Solidarity of Workers in West Germany. Japan. Demonstrators on the streets of Tokyo.