In what experts are calling the single worst atrocity since fighting broke out in South Sudan last December, hundreds of men, women, and children were killed last month when rebels seized the northern oil town of Bentiu. The rebels denied the allegations, saying it was retreating government troops who perpetrated the murders. Then, fighters took to radio airwaves—the means by which most South Sudanese citizens access news—and broadcast “hate messages” calling on men to rape women.

On April 14, nearly 300 Nigerian girls were abducted from their dormitories in a school in the northeastern town of Chibok. But this is hardly the first time Nigerian children have been kidnapped en masse for the purposes of sex—in fact, Nigeria is the birthplace of a sex-trafficking pipeline that leads directly to Italy.