May 1 -May Day

In many countries, May Day is synonymous with International Workers' Day, or Labour Day, which celebrates the social and economic achievements of the labour movement. As a day of celebration the holiday has ancient origins, and it can relate to many customs that have survived into modern times. Many of these customs are due to May Day being a cross-quarter day, meaning that (in the Northern Hemisphere where it is almost exclusively celebrated) it falls approximately halfway between the spring equinox and summer solstice.
Origins

The earliest May Day celebrations appeared in pre-Christian Europe, with the festival of Flora the Roman Goddess of flowers, the Walpurgis Night celebrations of the Germanic countries. It is also associated with the Gaelic Beltane. Many pre-Christian indigenous celebrations were eventually banned or Christianized during the process of Christianization in Europe. As a result, a more secular version of the holiday continued to be observed in the schools and churches of Europe well into the 20th century. In this form, May Day may be best known for its tradition of dancing the Maypole and crowning of the Queen of the May. Today various Neopagan groups celebrate reconstructed (to varying degrees) versions of these customs on 1 May.

The day was a traditional summer holiday in many pre-Christian European pagan cultures. While February 1 was the first day of Spring, May 1 was the first day of summer; hence, the summer solstice on June 25 (now June 21) was Midsummer. In the Roman Catholic tradition, May is observed as Mary's month, and in these circles May Day is usually a celebration of the Blessed Virgin Mary. In this connection, in works of art, school skits, and so forth, Mary's head will often be adorned with flowers. Fading in popularity since the late 20th century is the giving of "May baskets," small baskets of sweets and/or flowers, usually left anonymously on neighbours' doorsteps.

International Workers' Day
May Day can refer to various labour celebrations conducted on May 1 that commemorate the fight for the eight hour day. May Day in this regard is called International Workers' Day, or Labour Day. The idea for a "workers holiday" began in Australia in 1856. With the idea having spread around the world, the choice of May 1st became a commemoration by the Second International for the people involved in the 1886 Haymarket affair.

The Haymarket affair occurred during the course of a three-day general strike in Chicago, Illinois that involved common laborers, artisans, merchants, and immigrants. Following an incident in which police opened fire and killed four strikers at the McCormick Harvesting Machine Co. plant, a rally was called for the following day at Haymarket Square. The event remained peaceful, yet towards the end of the rally, as police moved in to disperse the event, an unknown assailant threw a bomb into the crowd of police. The bomb and resulting police riot left at least a dozen people dead, including seven policemen. A sensational show trial ensued in which eight defendants were openly tried for their political beliefs, and not necessarily for any involvement in the bombing. The trial lead to the eventual public hanging of four anarchists. The Haymarket incident was a source of outrage from people around the globe. In the following years, memory of the "Haymarket martyrs" was remembered with various May Day job actions and demonstrations.

As such, May Day has become an international celebration of the social and economic achievements of the labour movement. Although May Day received its inspiration from the United States, the U.S. Congress designated May 1 as Loyalty Day in 1958 due to the day's appropriation by the Soviet Union. Alternatively, Labor Day traditionally occurs on the first Monday in September in the United States. People often use May Day as a day for political protest, such as the million people who demonstrated against far-right candidate Jean-Marie Le Pen in France, or as a day for protest against government actions, such as pro-immigrant rallies across the United States.