/kloc-At the end of 0/8th century, many countries such as the United States and Europe gradually developed from capitalism to imperialism. In order to stimulate the rapid economic development and extract more surplus value, and to maintain this high-speed capitalist machine, capitalists constantly exploit workers by increasing labor time and labor intensity.
1877, the first national strike in American history began. The working class took to the streets to demonstrate and proposed to the government to improve working and living conditions, demanding that working hours be shortened and an eight-hour working day be implemented. Shortly after the strike, the ranks were expanding day by day, the number of trade union members surged, and workers from all over the country also took part in the strike movement.
1884 in June, eight international and national workers' groups in the United States and Canada held a rally in Chicago, USA, and decided to hold a general strike on May 1886, forcing capitalists to implement an eight-hour working system.
1866, the first international Geneva conference put forward the slogan of eight-hour work system. On May 1886 and 1 day, the United States held a large-scale strike demonstration with about 350,000 people as the center. The demonstrators demanded improved working conditions and an eight-hour working day.
On May 4th, striking workers held a protest in Haymarket Square. Because unknown people threw bombs at the police, the police finally opened fire, and four workers and seven policemen were killed one after another. It was called Hay Market Riot or Hay Market Massacre in history.
1 in July, 889, at the second international founding conference organized by Engels, it was announced that May1day would be designated as International Labor Day every year. International Labor Day, also known as "May 1 International Labor Day" and "International Demonstration Day", is a national holiday in more than 80 countries in the world. On May 1 day every year. This is a festival for working people all over the world.