A Nigerian teacher holds a sign reading "You have killed 173 teachers but have not killed our patriotism" as she and others take part in a protest rally against the killing of 173 of their colleagues by the Islamist Boko Haram group in northeastern states affected by the insurgency, in Lagos, on May 22, 2014. The Nigeria Union of teachers has called on its members across the country to shut schools today to protest against the abduction of Chibok schoolgirls and the heartless murder of 173 teachers by the rampaging Boko Haram Islamists. Meanwhile protesters also took their call for the release of more than 200 schoolgirls kidnapped by Boko Haram to Nigeria's president, as US military personnel headed to Chad as part of the rescue effort. AFP PHOTO / PIUS UTOMI EKPEI (Photo credit should read PIUS UTOMI EKPEI/AFP via Getty Images)
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AFP PIUS UTOMI EKPEI