"The United States is a crime scene," one of the quotes from this excellent book, gives you a sense of how Dunbar-Ortiz approaches US history. This book focuses on the profound injustices and immorality of how European colonizers and the inheritors of their project interacted with indigenous people, underlining the hypocrisy of much of the US's founding myths. Most of the book reviews this history from prior to the 20th century - if you're looking for a deeper analysis on more recent events I'd recommend "The Heartbeat of Wounded Knee." Overall this book makes a great addition to the US history canon, highly recommend