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Joe Tapera, 35, came to South Africa from Zimbabwe eight years ago and worked as an electrician until last month, when he was threatened by men wielding machetes. He's now living in a camp for displaced foreign workers. Ofeibea Quist-Arcton/NPR hide caption

itoggle caption Ofeibea Quist-Arcton/NPR

Zulu King Goodwill Zwelithini, center, arrives at a Zulu gathering at a stadium in Durban, South Africa. Six people have died in anti-immigrant violence in the city in recent weeks, and another death has been reported in Johannesburg; Zwelithini is accused of inciting the attacks with incendiary comments, but says his remarks were taken out of context. AP hide caption

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Campaigners marched Monday in Nigeria's capital of Abuja during a silent protest to raise awareness about girls and boys abducted by Boko Haram. Sunday Alamba/AP hide caption

itoggle caption Sunday Alamba/AP

Supporters of Muhammadu Buhari celebrate ahead of their candidate's victory, in Kano, Nigeria, on Tuesday. Ben Curtis/AP hide caption

itoggle caption Ben Curtis/AP

A man hammers a wall with elections posters at an open market in Kano, Nigeria, on Friday. The country is preparing for presidential elections on Saturday. President Goodluck Jonathan faces former military ruler Muhammadu Buhari and 13 other candidates in what is seen as the closest presidential race since the end of military rule in 1999. Goran Tomasevic/Reuters/Landov hide caption

itoggle caption Goran Tomasevic/Reuters/Landov