William Z. Foster was an American labor leader and politician, born on February 24, 1881. He is best known for his role as a prominent figure in the Communist Party USA and for advocating workers' rights throughout his life. Foster was a key organizer of the 1929-1933 Great Depression era labor movements, particularly in the steel industry. Foster also ran for president as the Communist Party candidate in 1932 and 1936. His writings and speeches focused on the importance of union organization and the need for social change. He passed away on July 1, 1961, leaving a significant impact on American labor history.