Gulag: A History of the Soviet Concentration Camps

This book is such an important, well-researched resource. First, because the Soviet Gulag has been underreported and allowed to fade in our cultural memory, and second, because the atrocities humans are capable of doing to their neighbors are repeating in the United States right now, and this book is a stark reminder of just how inured to such a thing a society can get when a government is allowed to continue harmful policies unchecked.