What is the theme of Witness by Karen Hesse?

The theme of Witness by Karen Hesse is the importance of standing up for what is right, even in the face of fear and opposition. The novel is set in the 1920s in a small town where racial tensions are high, and a young girl named Leanora Sutter experiences discrimination and violence because of her mixed-race heritage. Through the eyes of various characters in the town, the novel explores the damaging effects of prejudice and the power of speaking out against it. Ultimately, the message of the book is that we all have a responsibility to stand up for justice, even when it is difficult, and that by doing so, we can make a difference in the world.