That's true, pdq, however the American Federation of Labor had decided to hold a demonstration in favour of the international adoption of the Legal 8-Hour Day on 1st May 1890. This is why the day was chosen for similar demonstrations across the world.

"we have not inherited any privileges but have certainly enjoyed our inheritances!!!!! "

For once I would agree with you, Bozo. I feel extremely fortunate that I have inherited, especially from my maternal grandfather, the knowledge that wealth and personal power are less important that an altruistic attitude to those who are less well-off than ourselves.