Under the Banner of Heaven

"Under the Banner of Heaven" is a nonfiction book by Jon Krakauer that investigates the links between religious fundamentalism and violence within some Mormon communities. It explores the historical roots of extreme beliefs, particularly in polygamous groups, and examines real-life cases where these ideas influenced criminal acts. The book combines investigative journalism and personal stories to examine how tightly held religious convictions can lead to moral justification for harmful actions, challenging readers to consider the complexities of faith, belief, and their potential consequences.