The Francophone Brussels daily Le Soir asked the opinion research people of Dedicated to find out. They quizzed over a thousand participants and came to the conclusion that a full 44% hailed from the Brussels Region. 35% made the journey from French-speaking Wallonia, while only 21% of the demonstrators came from Flanders. The survey has a margin of error of 3.5%.
Most protesters said that safeguarding the unity of the country of Belgium was the main reason why they were there (16%). Other concerns, the speedy formation of a new government (15%) and unhappiness with politics (13%) also got people to take part.