Correct me if I am wrong.
The persistence in the singing of the populist ANC song, Kill the Boer, Kill the Farmer' at large gatherings by ANC leaders seems to have coincided with the huge rise in farm attacks. When pointed out by the court that this was hate speech, the ANC appealed that judgement. The ANC denied it , but this was and still is the worst kind of racial incitement possible and puts the blame for the viciousness  of these attacks back to Zuma and the ANC. Regardless of what the IRR says, farm murders are politically motivated.
No level headed person will argue that there are other factors involved, such as opportunism, rumours of large amounts of cash, pay disputes, etc., but through this song the ANC  said: Go ahead, it's fine. Do it.