15 April 2013, two homemade bombs exploded near the finish line of the Boston Marathon, killing three people and wounding 264 others. The elder of the brothers implicated in the attack, Tamerlan Tsarnaev, died in the ensuing manhunt; Dzhokhar's trial got underway in early 2015. What we don't know is why. How did such a nightmare come to pass?
Masha Gessen is an acclaimed Russian-American journalist and the author of several books, including bestsellersThe Man Without a Face and Words Will Break Cement. Her work has appeared in The New York Times, Slate, Vanity Fair, and many other publications, and has received numerous awards. A longtime resident of Moscow, she now lives in New York.