If the recent Women’s March revealed anything, it’s that we have the power to stand up and demand change. Voices are meant to be heard, and it’s important to use them. Over the past century, there have been tons of amazing women who have dedicated their lives to supporting certain causes. Their work—whether through protests, social activism, or online campaigns—has made real change happen, ensuring that they leave the planet a better, more equal place. Here, ten women who fought for, and achieved, change.