Haymarket massacre: In 1884, the U.S. Federation of Organized Trade and Labor Unions had passed a law declaring that, as of May 1, 1886, an eight hour workday would be the full and legal workday for all U.S. workers – the ruling class had that much time to recognise this new law and put it into effect.
The owners refused.On May 1, 1886, workers took to the streets in a general strike throughout the entire country to force the ruling class to recognise the eight-hour working day. Over 350,000 workers across the country directly participated in the general strike, with hundreds of thousands of workers joining the marches as best they could.
In what they would later call the Haymarket riots, during the continuing strike action on May third in Chicago, the heart of the U.S. labor movement, the Chicago police opened fire on the unarmed striking workers at the McCormick Reaper Works, killing six workers and wounding untold numbers. An uproar across the nation resounded against the government and its police brutality, with workers' protest rallies and demonstrations throughout the nation set to assemble on the following day.
On May 4, Chicago members of the anarchist IWPA (International Working Peoples' Association) organized a rally of several thousand workers at Haymarket Square to protest the continuing police brutality against striking workers on the South Side. As the last speaker finished his remarks that rainy evening, with only 200 of the most dedicated workers remaining at the rally, 180 armed police marched forward and demanded the workers to disperse. Then, deep within the police ranks, a bomb exploded, killing seven cops. The police opened fire on the unarmed workers – the number of workers wounded and killed by the cops is unknown to this day. Eight anarchists were arrested on charges of "inciting riot" and murder. The retaliation of the government was enormous in the days to follow, filling every newspaper with accusations, completely drowning the government murders and brutality of days past.
Eight workers were convicted as anarchists, were convicted of murder, and were convicted of inciting a riot. Only one of the eight men accused was present at the protest, and he was attempting to address the crowd when the bomb went off. In one of the greatest show trials in the history of the working-class movement no evidence was ever produced to uphold the accusations, though all eight were convicted as guilty. Four of the prisoners – Albert Parsons, August Spies, George Engel and Adolph Fisher – were executed, Louis Lingg committed suicide, and the three remaining were pardoned due to immense working class upheaval in 1893.
On May 1, 1890, in accordance with the decision of the Paris Congress (July 1889) of the Second International to commemorate the Haymarket martyrs, mass demonstrations and strikes were held throughout Europe and America. The workers put forward the demands for an 8 hour woring day, better health conditions, and further demands set forth by the International Association of Workers. The red flag was here created as the symbol that would always remind us of the blood that the working-class has bleed, and continues to bleed, under the oppressive reign of capitalism.
From that day forward (starting in 1891 in Russia, by 1920 including China, and 1927 India) workers throughout the world began to celebrate the first of May as a day of international proletarian solidarity, fighting for the right of freedom to celebrate their past and build their future without the oppression and exploitation of the capitalist state.
source: http://www.marxists.org/glossary/events/m/a.htm#may-day
