In 1904, the International Socialist Congress called on "all Social Democratic Party organizations and trade unions of all countries to demonstrate energetically on May First for the legal establishment of the 8-hour day, for the class demands of the proletariat, and for universal peace."
May Day selanturnyané manados acara ngawarsa.[5] Konférénsi Kaenem Internasional Kakalih, nganikayang "samian seka Partai Sosial Démokrat miwah serikat pakarya saking samian negara madémontrasi ring 1 Méi antuk pangadegan hukum kutus jam arahina, antuk tuntutan kelas proletariat, miwah antuk padanéam universal."[6]