Labor Day, celebrated on the first Monday of September in the U.S., honors the social and economic achievements of American workers and has its roots in the labor movements of the late 19th century. The first celebration occurred in New York City in 1882, organized by the Central Labor Union, with key figures like Peter J. McGuire and Matthew Maguire credited for proposing the holiday. The observance includes parades and community gatherings, reflecting its origins in labor activism. However, some argue that the current celebration has strayed from its activist roots, with May 1 being recognized globally as International Labor Day due to the Haymarket Massacre. This year marks the 130th anniversary of Labor Day, highlighting ongoing efforts by unions to advocate for workers' rights.