Zimbabwean nationals lean on a bus window as they leave the International Organisation for Migration Reception and Support Centre grounds after being repatriated as they fled xenophobic violence in South Africa on April 21, 2015 in Beitbridge.  South African soldiers will be deployed to tackle gangs hunting down and killing foreigners, officials said on April 21, after at least seven people died in a wave of anti-immigrant violence. AFP PHOTO / ZINYANGE AUNTONY        (Photo credit should read Zinyange Auntony/AFP/Getty Images)