The people named in the following passage are most likely

But the decades of oppression and brutality had another, unintended effect, and that was that it produced the Oliver Tambos, the Walter Sisulus,
the Chief Luthulis, the Yusuf Dadoos, the Bram Fischers, the Robert Sobukwes of our time-men of such extraordinary courage, wisdom, and
generosity that their like may never be known again.

A. people who died in the struggle for civil rights
B. white people who sympathized with Mandela's cause
C. the former leaders of South Africa
D. people like Mandela who fought against apartheid