Clara Zetkin was a German Marxist theorist, activist, and organizer of the first International Women's Day in 1911
We must always press on the question of Woman Suffrage when we are agitating about the Suffrage. We have always argued in the Suffrage agitation that it was a question of equal rights for men and women, and we must continue to do so till we succeed. We must be united. We know that we shall not attain the victory of Woman Suffrage in a short time, but we know; too, that in our struggles for this measure we shall revolutionise hundreds of thousands of minds.
We carry on our war, not as a fight between the sexes, but as a battle against the political might of the possessing classes; as a fight which we carry on with all our might and main, without hatred of the other sex; a fight whose final aim and whose glory will be that in the broadest masses of the proletariat the knowledge shall arise that when the day of the historical development shall have made sufficient progress then the proletariat, in its entirety, without distinction of sex, shall be able to call out to the capitalist order of society: “You rest on us, you oppress us, and, see, now the building which you have erected is tottering to the ground.”
Excerpt from Social democracy and Women Suffrage, London 1906