The South African president’s office vowed Wednesday to fight the “treasonous act of misinformation,” which it blames for spreading abroad what it considers false narratives about the persecution of white Afrikaners. The warning came two days after the first charter flight of several dozen Afrikaner refugees arrived in the U.S. On Tuesday, President Cyril Ramaphosa called the refugees “cowards” for “running away” — a sentiment that his party, the African National Congress (ANC), echoed. The ANC claimed that the Afrikaners were not being persecuted, while faulting them for abandoning “transformation,” a policy of racial economic redistribution. Ramaphosa’s representative, Minister in...