By Lisa VivesUNITED NATIONS, Apr 21 2015 (IPS)Shocking images of South Africans beating foreign-born residents residing in Durban, Johannesburg and other parts stunned the continent which had taken a message of brotherhood from former president Nelson Mandela.At least six people were killed, more than 5,000 displaced and shops were looted and razed in the attacks which have been building over week