Now aged 91, Dolores Huerta continues the advocacy work she began as a young teacher in the 1950s. Although the work often focuses on expanding opportunities for women, children, and the working poor, Huerta reminds us that anyone can facilitate change: "Every moment is an organizing opportunity, every person a potential activist, every minute a chance to change the world.”

To learn more about Huerta, check out her entry at the National Women's History Museum.