“De la Rey,” a hit South African rock song about an Afrikaner general in the Second Boer War, has inspired some white fans to wave the old, apartheid-era South African flag. “A dozen years after the end of an Afrikaner government that invented apartheid, the mere concept of Afrikaner pride remains an exquisitely sensitive issue among whites and blacks alike. … ‘De la Rey’ has become a vessel for those aspirations and fears and, for the last month, the object of a caustic, often racially tinged national debate.”