Africa News Tonight: The Office of the High Commissioner for Human Rights reports hundreds of thousands of Sudanese civilians are facing violence, abuse and exploitation while fleeing their homes in search of safety. South Africa today commemorated International Workers’ Day amid labor disruptions caused by power cuts, economic decline and retrenchments. And, Cameroonian journalists say they remain fearful more than three months after the abduction and killings of investigative journalist Martinez Zogo and radio presenter Jean-Jacques Ola Bebe. For this and more, stay tuned to Africa News Tonight!