May day in working-class history ; 1st may internationalist workers' day

Those who don't learn the lessons of the past are likely to commit the same mistakes in the future, and consequently, history is worthy of study in all disciplines, and particularly in politics! This account comprises facts of historical record, and places the political magnifying glass over the instructive and terrible events of over 120 years ago, that answer the question of why the First of May was chosen as International Workers' Day, or May Day.