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.
Coalitions will need to be struck after the ANC's worst performance since 1994.
The ANC is in danger of losing the dominance it has held since the end of apartheid.
The elections are being billed by the opposition as the country's most important ever.
Members of the leftwing Economic Freedom Fighters have a habit of getting expelled from parliament.
The opposition leader said his party will take up arms if the ANC attempts to rig elections.
Malema's Economic Freedom Fighters say the incident was an act of "intimidation".
Opposition party members were ejected for heckling Zuma over his state-funded home improvements.
The South African president used state funds to make build himself a swimming pool and amphitheatre.
The recent violence is also hampering regional relations as Nigeria threatens to recall its ambassador.