In oppressive social relations, those who hold power are too often able to close off alternatives, even the very thought of alternatives, so that the status quo seems inevitable and impossible to change. The great power of women's movements has been their ability to challenge such thinking and to argue not only that things must change but also that things can change. We must never doubt for a moment that each and every one of us when we work together can meet injustice head on and create a climate for change. Women have always drawn on the power of collective action to change the world. Indeed women's struggles for gender equality and justice add up to some of history's most dramatic revolutions in social relations. Ours is an unfinished revolution, but we have challenged injustice and oppression in social relations the world over in a way that is key to building sustainable democracy, development, and peace. This volume of Progress of the World's Women shows what is at the heart of this revolution: women fighting to hold both public and private authorities accountable for meeting standards of gender justice, as we increasingly demand an end to injustice. When accountability and justice finally prevent gender bias, systems of power will as well and expand, not limit, alternative approaches to human relationships.