The Socio-Economic Rights Institute of South Africa (Seri) litigation director, Nomzamo Zondo, says Deputy President Cyril Ramaphosa should apologise to families of the miners shot and killed by police in Marikana.
Ramaphosa has apologised for not using appropriate language when he called for "concomitant action" after a number of miners had already been killed during the wage protest.
The deputy president was a shareholder in the platinum miner, Lonmin, during the 2012 Marikana massacre.
He was speaking at Rhodes University in Grahamstown on Sunday.
Zondo says Ramaphosa deserves blame for the way he spoke at the time, especially given his own experience with mine workers.
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