SA has been through troubled times before and we should now, more than ever before, remember the example of Nelson Mandela and use it as a beacon of light. So says his widow Graca Machel, in a message prepared for Mandela Day which is commemorated on Sunday.

SA has been through troubled times before and we should now, more than ever before, remember the example of Nelson Mandela and use it as a beacon of light. So says his widow Graca Machel, in a message prepared for Mandela Day which is commemorated on Sunday.