"Rights groups worldwide celebrate International Women’s Day (IWD)...as they commemorate women’s achievements and call for equality. But for an event championed by international nongovernmental organizations and major global corporations, it may surprise some that IWD was born out of the U.S. socialist movement in the early 20th century. In 1909 the Socialist Party of America organized a New York City march commemorating a garment workers’ strike the previous year. The party called it National Women’s Day, and women organized by the group demonstrated for better pay and working conditions as well as the right to vote... The Socialist Party continued to hold Women’s Day celebrations on the last Sunday of February for the next few years, and newspapers from the era mentioned International Women’s Day on Feb. 27, 1910 — when thousands of women organized by the socialist movement gathered at Carnegie Hall... European women, meanwhile, were championing similar ideals... IWD, consequently, was celebrated for the first time in Austria, Denmark, Germany and Switzerland on March 19, 1911. Women in these countries demanded the right to vote, to hold public office and the right to work..."