Millions have taken to the streets and to social media to campaign for women's issues this year.

What is behind the trend? Philippa Thomas finds out as part of the BBC's 100 Women season.

Our 100 Women season showcases three weeks of inspirational stories about 100 influential and inspirational women around the world . We create documentaries, features and interviews, giving more space for stories that put women at the centre.

We want YOU to get involved with your comments, views and ideas. You can find us on: Facebook, Instagram, Pinterest, Snapchat, and YouTube using the hashtag #100Women. You can also listen to the programmes.

Spread the word by sharing your favourite posts and your own stories using #100women