IWD was launched in 1917 by the American Socialist Party to oppose the war and support nascent communist movements across Europe. Their message of ‘bread and peace' was later attributed by Leon Trotsky as the real start of the communist and socialist revolutions. The underlying message to attract ideologically vanilla people was social justice for women, it’s upshot being that under socialism women would do better and be more equal than under capitalism.
Well, it hasn’t turned out to be that way despite that the IWD celebrations to this day continue spreading the lies that launched the movement. A. Davies and J. Harrigan write (‘For Gender Equality, You Can’t Beat Capitalism’) that “socialist leaders used International Women’s Day ostensibly to highlight their commitment to gender equity. Yet contrary to its socialist origins, more than 100 years of evidence since the first International Women’s Day suggests that free markets are the single best solution to inequity, gender or otherwise.”