Former DA leader and outgoing Western Cape Premier Helen Zille will be referred to the party's Federal Executive Council over her controversial 'black privilege' tweet. Two other DA MPs, Dr Michael Cardo and Ghaleb Cachalia, will also be subjected to internal processes after controversial tweets. A report on the News24 site notes that DA leader Mmusi Maimane and chief whip John Steenhuisen yesterday told a media conference that certain types of conduct on social media would not be tolerated. 'The appropriate steps have been taken in this regard. The party will deal with it as a federal executive matter. I've certainly engaged her on this. What certainly cannot be happening is this view that we must be having this discussion on social media,' Maimane said.