Book excerpt: This powerful activity book will engage hands, hearts, and minds as it introduces children to the guiding principles of the Black Lives Matter movement. When the Black Lives Matter movement began in 2013, the three founders--Alicia Garza, Patrisse Khan-Cullors, and Opal Tometi--anchored its work in a list of guiding principles, developed through conversation with other activists. These principles commit the movement to empathy, loving engagement, and just action among its participants; affirm the importance of Black women, families, elders, and LGBTQ folk; and celebrate the strength and diversity of Black people in their communities and around the globe. Now young people can explore these powerful principles in What We Believe: A Black Lives Matter Principles Activity Book. Created by two teachers with more than thirty-five years of educational experience between them, the book presents the guiding principles in down-to-earth, child-friendly language, with each principle accompanied by writing prompts, space for children or adults to create their own reflections, and a coloring page. Supporting materials guide adults in sharing the principles with children and encourage kids to dream big and take action within their communities. An essential resource for anyone discussing racial equity with young people, What We Believe offers a beautiful and inspiring lens on the most important social justice movement of our time. Lee & Low Books will donate a portion of its proceeds from the book to the Black Lives Matter Global Network Foundation, Inc.