Shannon Watts is the founder of Moms Demand Action, the nation’s largest grassroots group fighting against gun violence. Known as the ‘summoner of women’s audacity,’ she spent more than a decade leading one of the world’s largest field experiments for mobilizing women. She has been named one of TIME’s 100 Most Influential People, a Forbes 50 over 50 Changemaker, and a Glamour Woman of the Year.