The May Day demonstration of workers in the city of Sofia (Bulgaria), in Prague (Czechoslovakia), in Berlin (GDR), in Hanoi (North Vietnam), in Budapest (Hungary), in Ulan Bator ( Mongolia), in Warsaw (Poland), in Lisbon (Portugal), in West Berlin (FRG), in Tokyo (Japan), in Rome (Italy). May Day rally in the Paris suburb of Courneuve (France). Cambodia. Fighting units of the government army garrison troops against the people's armed forces on the outskirts of Phnom Penh, Cambodia.