Little ones who love to say "No!" can chime in while they learn about iconic activists from Frederick Douglass and Alice Paul to Martin Luther King Jr. and Malala.

Each spread introduces an iconic figure—such as Gloria Steinem or Cesar Chavez—along with a super simple summary of the actions they took to change the course of history. Activists of all ages will learn about the abolitionist movement, civil rights, women's rights, and more! Detailed, colorful art will thoroughly engage toddlers and preschoolers. And the chance to join the refrain on every spread "NO, NO!" is sure to please the tiniest protestors. (A mini history of protest movements at the end of the books is a handy cheat sheet for parents!)

Little ones who love to say ''No!'' can chime in while they learn about iconic activists from Rosa Parks to Malala Yousafzai.