After three days of strike, on May 4 called a concentration in the Haymarket square. This time, the tension between the police and workers had reached a climax, after the violent clashes of previous days. That day, an explosive device exploded in the square of Haymarket, killing a police officer. The authorities blamed crime workers and more than 30 people were arrested for their radical ideas.
Initially eight anarchist workers were sentenced to death, although three of them were finally sentenced to prison and five to the gallows. Three of them were journalists, one typographer and another Carpenter. In honor of the fight by the day, 8-hour and in memory of these five people known as 'the martyrs of Chicago', in 1889 was declared on May 1 the Day of the worker by agreement of the worker socialist of the second International Congress.
BE CELEBRATED AROUND THE WORLD?
Lol In the United States and Canada held the labor day first Monday of September. It was thus decided to unlink this date of the labor movement for fear to Socialism from taking root in the United States. Subsequently, Canada and other countries took the same measure.
Source: The newspaper