Documenting the Genocide of Iraq’s Yazidis

The scene Diego Ibarra Sánchez encountered in and around the Iraqi city of Sinjar was grim: a desolate town left in ruins, silent except for the crackle of gunfire. Thousands of its Yazidi residents — members of a persecuted religious minority — were able to flee to a mountain from the onslaught of the Islamic State. Still, Mr. Ibarra Sánchez found ample evidence of the terror rained down upon this region by the Islamic State in 2014.