As Mandela's legacy is celebrated with countless tributes each July 18, there remains an undeniable blemish on his selfless contributions—a poignant reminder that the path towards his dream of a united South Africa remains fraught with challenges and complexities, writes Edwin Naidu.

Three decades after apartheid, many South Africans say Nelson Mandela's vision remains unfulfilled. Inequality, xenophobia and anti-migrant protests continue to test his legacy.

As Mandela's legacy is celebrated with countless tributes each July 18, there remains an undeniable blemish on his selfless contributions—a poignant reminder that the path towards…