On April 14, 2014, the Boko Haram militant group kidnapped 276 schoolgirls in Chibok, Nigeria, causing an international uproar. People across the world united through the social media hashtag #BringBackOurGirls. Two years later, 219 of the students are still missing.
Two Years Have Passed Since Chibok Girls Kidnapped

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Goodluck Jonathan, then-president of Nigeria, greets parents of girls kidnapped in Chibok, in Abuja, July 22, 2014.