May 1 marks the 121st day of the year (if it's a leap year, then 122nd) in the Gregorian calendar. It is more famously marked as International Workers' Day, also known as Labour Day. The date was chosen for International Workers' Day by the Second International to commemorate the Haymarket affair, which occurred in Chicago on 4 May 1886. The police were trying to disperse a public assembly during a general strike for the eight-hour workday when an unidentified person