They won't have much choice. They will be overwhelmed. The state will decline to oppose criminal violence against them, in fact, will encourage it by allowing its perpetrators to keep what they steal and by criminalizing acts of self defense. With luck you might survive under those conditions but you won't get much farming done.
Time for a Atlas to Shrug “Bigly” in South Africa. The sooner the better, will prevent many unnecessary deaths. No more tourist trade, game hunting, etc. No more capital. Yesterday was not soon enough to leave the country. Sad, but inevitable. The next best example of true socialism since Venezuela.
I say let’s import about 1 million of those Afrikaners. They can call themselves “African-Americans”, they’re God-fearing, and have a phenomenal work ethic.