After defecting from North Korea, Yeonmi Park found liberty and freedom in America. But she also found a chilling crackdown on self-expression and thought that reminded her of the brutal regime she risked her life to escape. When she spoke out about the mass political indoctrination she saw around her in the United States, Park faced censorship and even death threats. With urgency and unique insight, she reminds us of the fragility of freedom, and what we must do to preserve it.