There was some pulling and shoving between police and trades unionists outside the headquarters of the country's largest political party on Monday.
200 members of the socialist public sector workers union first gathered outside the seat of the Belgian government at noon on Monday, but soon moved on with Bart De Wever's N-VA HQ in their sights.
Arrived there they chucked no fewer than 700 eggs at the building. Police had cordoned off part of the street and used tear gas to keep the protesters at arm’s length.
Later the protesters hurled a chocolate drink at the HQ of the Flemish employers' organisation VOKA. Here too the police had thrown a protective ring around the building.