As he watched the television images of terrified Yazidi women and children fleeing Islamic State militants in northern Iraq, a familiar unease gripped Father Patrick Desbois.
There were no men among the fleeing villagers. This, he told himself, was genocide unfolding before his eyes.
Though Desbois had never heard of the Yazidi, the 2014 images stirred a spiritual calling to investigate the mass killings and other atrocities inflicted on this non-Muslim religious minority and raise awareness of a little-known ethnic group that has suffered so profoundly.
Islamic State, also known as Daesh, its Arabic acronym, killed an estimated 5,000 Yazidi...