"extreme right" with no proof? Vlaams Belang is extreme right, not N-VA which has the mayor of Antwerp. You are listening too much to the leftish Wallonian controlled state media ( cfr. Stéphane Moreau with Nethys / Tecteo on Wikipedia)
They just think the south takes too much advantage ( eg. with 4 million people they have the same voting % in the country as the north with 6 million people).
While the "right" north has to subsidize the "socialist" south for more than 40 years without no improvement at all ( eg. just check the unemployment %)
Highest criminality rates in Belgium are in Brussels, Molenbeek, ... with also, no improvement in the foreseeable future. Station north is a public train station where everyone stays away from ( too dangerous ).
https://fr.wikipedia.org/wiki/St%C3%A9phane_Moreau_(homme_po...
https://fr.wikipedia.org/wiki/Nethys
https://nl.wikipedia.org/wiki/Enodia
All financial political scandals are involved with leftisch politicians: Publifin, La Carolorégienne, Anne-Marie Lizin, Michel Daerden, Van Cauwenberghe ( Charleroi), Agusta-Dassault, ...
And last but not last, specific for Brussels: Samusocial where Yvan Mayeur ( the ex-mayor of Brussels) was involved with Fraud and intimidation, with their "non-profit for homeless people", LOL! It's despicable!
https://nl.wikipedia.org/wiki/Samusocial_Brussels
I'd prefer Antwerp above Brussels every single day of the year.