Today is May Day. An ancient point of the Gaelic calendar marking spring, it was long marked by pagan fertility celebrations and rites, dancing around May poles and the like, with many variations on this in different countries. The day became associated with the worker’s movement in 1886 when in Chicago a movement for the 8-hour work day involved many demonstrations and strikes and ultimately a riot in Haymarket Square in Chicago that culminated in a bombing and a massacre (with both police and workers killed), followed by trials and executions of various anarchists and activists. The actual date if the massacre was on May 4, but May1 became associated with the event, and it spread to become the leading International Worker’s Day, despite competition from rivals such as Labor Day in September in the US. Ironically both of them were started by socialists and in the US, but somehow in the US Labor Day came to be favored by more conservative interests and was made the legal holiday, with May Day the day celebrated by socialists in other parts of the world.