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1976 Soweto uprising Jan Steyn was instrumental in organizing a summit of black urban leaders such as Nthato Motlana and industrialists led by Harry Oppenheimer and Anton Rupert.<unk> 1976 Soweto uprising Jan Steyn was instrumental in organizing a summit of black urban leaders such as Nthato Motlana and industrialists led by Harry Oppenheimer and Anton Rupert. ️<unk>️<unk>️<unk>️<unk>️<unk>️