To be clear, Flaams are the Dutch speaking majority within the false construct and failed state of Belgium, where the people speak two different languages, adhere to different governing and economic systems and have no loyalty to the flag and anthem. (Read Paul Belien’s A throne in Brussels)
These jihadis are the product of socialist Waloon (French Belgian speakers) policies, as well as Flaam socialists, with the majority of the latter wanting to be rid of the state once and for all.
Flemish jihadis involved in Syria atrocities?

Mayor of Vilvoorde Hans Bonte: “Security services have been telling us for some time that Flemish youngsters are involved in IS’s most hideous atrocities.”
He says that Jihadi fighters from Antwerp and Vilvoorde serve as IS commanders. He believes more and more Belgians are active in Iraq too. “The way and the speed at which formally functioning young guys and women are being radicalised are disturbing and beyond rational thought.”
The daily Het Laatste Nieuws earlier claimed that a Flemish fighter Abdelmajid Gharmaoui was identified as one of those involved in the beheadings. Abdelmajid Gharmaoui from Vilvoorde was convicted in his absence in connection with the Sharia4Belgium affair. Belgian public prosecutors are investigating the matter. Judicial sources the VRT has spoken to deny that Abdelmajid Gharmaoui was involved in the beheading.
More here. H/T: Fjordman