91福利社

This year thousands of people around the world have taken to the streets to denounce violence against women. Global Questions talks to two former female presidents, one from Africa and one from Europe, who've both been trailblazers for women's rights for decades.

Mary Robinson, Ireland's first female president, and Ellen Johnson Sirleaf, former president of Liberia and the first female head of state in Africa, take your questions on why women in so many countries continue to endure sexism and sexual violence, and why change seems so difficult to achieve.