Sandy Hook review: anatomy of an American tragedy – and the obscenity of social media

Elizabeth Williamson's book on the 2012 elementary school shooting is a near-unbearable, necessary indictment of Facebook, YouTube and the conspiracy theories they spread

Even in a country now completely inured to the horrors of mass shootings, the massacre at Sandy Hook remains lodged in the minds of everyone old enough to remember it. Ten years ago, 20-year-old Adam Lanza fired 154 rounds from an AR-15-style rifle in less than five minutes. Twenty extremely young children and six adults were killed.

It was the worst elementary school shooting in American history.