The 1994 Rwandan genocide, in which more than 800,000 Tutsi and moderate Hutu were massacred in just 100 days, was an unparalleled modern-day slaughter. How does a nation pick up the pieces after the killing has stopped?

In a gripping narrative that examines the power of the press and sheds light on how the media turned tens of thousands of ordinary Rwandans into murderers, award-winning author and journalist Dina Temple-Raston traces the rise and fall of three media executives --...