Mapaila was the main speaker at a dialogue - attended largely by SA Communist Party and ANC youth - celebrating the Rivonia Trial accused at Liliesleaf Farm, Sandton, on Tuesday.
Launching a controversial attack on the late Sobukwe, a revered figure in the fight against white domination, Mapaila said the PAC founder lived a better life on Robben Island and “cannot be forgiven for that”.
“I’ve never said it anywhere else but it’s important that I say it to you now,” he said.
“Sobukwe left the ANC on the basis of its acceptance of white people. But the thing I said I’m going to speak of for the first time is that when our leaders were in Robben Island they were incarcerated.