Duduzane Zuma appeared briefly in the Randburg Magistrate's Court on Friday.
Black First Land First (BLF) leader Andile Mngxitama addressed BLF members who showed up in support of Zuma.
Zuma's father, former president Jacob Zuma, was also in attendance as a show of support.
Duduzane Zuma is charged with culpable homicide for his involvement in a 2014 accident.
His case was postponed to January 24, 2019.