Did you celebrate May 1st?
Secret societies do nothing without multiple layers of esoteric meaning; symbolism is of vital importance. It was in this tradition that Adam Weishaupt (a Jewish jesuit priest) founded the Illuminati on May 1st, 1776. When we look at the doctrine of the Illuminati, it becomes clear that the choice of May Day for its birth was no coincidence.
In 1792, as news reached Strasbourg of the German Monarchs' declaration of war on Revolutionary France, Dietrich commissioned a young engineer, Claude-Joseph Rouget de Lisle, to write a patriotic song to rally the people:

International Workers' Day
It was that first May Day protest which is commemorated by Unions, Communists and Anarchists worldwide as Labor Day or International Workers' Day. The Marseillaise was sung that day in Chicago, and the Red Flag was flown. The strikes continued and on May 4th there was a tragedy: an anarchist threw a makeshift bomb into a crowd of police, killing one officer instantly while seven more later died of injuries. The police opened fire wounding twelve protesters and killing four.
All this is a part of history and there is much information on the web about the Haymarket Massacre, the subsequent arrest and execution of the "Haymarket Martyrs", etc. But why was May 1st chosen for the strikes in the first place? - It was no

On the surface May 1st, 1886 seems to have been chosen arbitrarily. As the story goes, in 1884 the U.S. Federation of Organized Trade and Labor Unions... +++ And the poor devils are all convinced that Communism is against Capitalism! They do not know, that Communism is the bastard child of Capitalism!...
"We all adore you to death, dear Mr. Stalin and Lenin!"