On May 16, 2003, fourteen suicide bombers launched a series of attacks throughout Casablanca. It was the deadliest attack in Morocco’s history. The bombers came from the shantytowns of Sidi Moumen, a poor suburb on the edge of a dump whose impoverished residents rarely if ever set foot in the cosmopolitan city at their doorstep. Mahi Binebine’s novel Horses of God follows four childhood friends...