The course involves training with weapons and hand-to-hand combat.
One of the victims died and the other two are currently in critical condition.
The government in Pretoria is considering whether to expropriate their farmland without offering compensation.
They should be offering to help find solutions instead of defending their privilege.
In a viral video, Momberg had referred to black people as "kaffirs," a derogatory term that was frequently used during South Africa's apartheid regime.
"No parent, no matter how poor, should have to bury a five-year-old—a child that lay in faeces" said an education campaign group.
The South African parliament is accused of tacitly supporting attacks on white farmers after it passed a motion which could see farmland redistributed without compensation.
South Africa was "offended" after an Australian minister said the white Afrikaner population was "persecuted" and in need of a "civilized country."
Australia's Home Affairs minister said white farmers from South Africa needed assistance "from a civilized country like ours."
"The time for reconciliation is over," said Julius Malema, leader of the Economic Freedom Fighters opposition party.
"These fossils and this science is about our shared human heritage."
"This is the first time an ecosystem has been found to survive directly on the basis of nuclear energy."
The British Foreign Office warned of an increased risk of attacks by "terrorists" in South Africa.
His resignation sets off the Ramaphosa era.
The "Teflon president" resigned on Wednesday amid growing pressure from the African National Congress.
Some say Rogelio Martinez was bludgeoned to death by rocks. Ted Cruz jumped on the bandwagon.
The countdown to Day Zero ends in a matter of months.