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Year 1921

Celebration is not only dominated by the communist groups, but also by the trade unions of non-komunis.Misalnya, on Labor Day, 1921, Tjokroaminoto, accompanied by his disciples, Sukarno, took the podium to make a speech representing the Union under the influence of the SI.

Year 1923-1927

Labor movement began routinely commemorate the workers of the world, which is usually accompanied by a massive general strike. Labor Day 1923 worldwide, Semaun already told a public meeting VSTP (railway workers' union) in Semarang to launch a general strike. In a leaflet distributed VSTV strike, the main issues raised include: hours of work 8 hours, delay removal of bonus to salary increases promise fulfilled, the handling of disputes handled by an independent arbitration body, and the prohibition of dismissal without cause.

In 1926, ahead of a planned rebellion against Dutch colonialism PKI, International Labor Day commemoration eliminated at that time. Therefore, the story about the planned rebellion has spread from mouth to mouth, so many people who suspect International Labour Day as the moment of the outbreak of the rebellion. According to Ruth McVey T Emerging Communism in Indonesia, the Dutch colonial authorities really believe the rumors and set up the anticipation, the PKI leaders decided not to hold a warning May 1 in order to prevent the arrest of cadres whose energy is very dibutuhkan.Setelah armed uprising erupted in 1926 and 1927, the International Labor Day commemoration is very difficult to dilakukan.Pemerintah colonial began pressuring unions and forbade them to do the celebration.