occupied for twenty-five years. Having studied to become a teacher, Zetkin developed connections with the women's movement and the labour movement in Germany from 1874. In 1878 she joined the Socialist Workers' Party (Sozialistische Arbeiterpartei, SAP). This party had been founded in 1875 by merging two previous parties: the ADAV formed by Ferdinand Lassalle and the SDAP of August Bebel and Wilhelm Liebknecht. In 1890 its name was changed to its modern version Social Democratic Party of Germany (SPD). Around 1898, Zetkin formed a friendship with the younger Rosa Luxemburg that lasted 20 years. Despite Luxemburg's indifference to the women's movement, which absorbed so much of Zetkin's energies, they became firm political allies on the far left of the SDP. Luxemburg once suggested that their joint epitaph would be "Here lie the last two men of German Social Democracy." In the debate on Revisionism at the turn of the 20th century they jointly attacked the reformist theses of Eduard Bernstein, who had rejected the ideology of a revolutionary change, towards "revolutionary socialism". Fight for women's rights Zetkin was very interested in women's politics, including the fight for equal opportunities and women's suffrage, through a socialist means. She helped to develop the social-democratic women's movement in Germany; from 1891 to 1917 she edited the SPD women's newspaper Die Gleichheit (Equality). In 1907 she became the leader of the newly founded "Women's Office" at the SPD. She also contributed to International Women's Day (IWD). In August 1910, an International Women's Conference was organized to precede the general meeting of the Socialist Second International in Copenhagen, Denmark. Inspired in part by American socialists' actions, Zetkin, Käte Duncker and others proposed that "a special Women's Day" be organized annually, although no date was specified at that conference. Delegates (100 women from 17 countries) agreed with the idea as a strategy to promote equal rights including suffrage for women. The following year on 19 March 1911, IWD was marked for the first time, by over a million people in Austria, Denmark, Germany, and Switzerland. However, Zetkin was deeply opposed to the concept of "bourgeois feminism," which she claimed was a tool to divide the unity of the working classes. In a speech she delivered to the Second International in 1889 she stated: The working women, who aspire to social equality, expect nothing for their emancipation from the bourgeois women’s movement, which allegedly fights for the