White farmers: how a far-right idea was planted in Donald Trump's mind - 2018-08-24
On Twitter, Donald Trump indicated that he had been watching. The president's tweet called for further study, but treated the "large scale killing of farmers" as a settled fact, when reporting indicates that against the background of a generally high murder rate in South Africa, there is no evidence of white farmers being specifically targeted.
But Trump's tweet came at the end of a long process whereby the far-right idea of "white genocide" in South Africa had been mainstreamed, working its way from far-right websites and forums, into the rightward edge of mainstream media, and then into policy proposals. News Corp outlets have played an outsized role in that process.