Hi John,

Today, I'm reminded of a quote widely attributed to American anthropologist Margaret Mead: "never doubt that a small group of thoughtful, committed, citizens can change the world. Indeed, it is the only thing that ever has."

As a ONE supporter, I'm sure those words resonate with you as much as me and this week we're celebrating the activists who lead, educate, and inspire us to change the world.

Whether you're passionate about girls' right to education like Malala Yousafzai, or you speak out on racial injustice like Nelson Mandela, we all have a voice that can help create a safer, healthier and more equal future.

John, who's your favorite activist? We've compiled a list of 10 well known change-makers for you to choose from: