For the purposes as discussion, the Flemings may be described as basically Dutchmen, and the Walloons as basically French. Agatha Christie's Hercule Poirot used to object to being described as French, but that's it.
Poirot was a Walloon, and Paul Belien, who has written for us, is a Fleming. So is Freya Van den Bossche, right, a Deputy Prime Minister in Belgium.
Abdelhamid Abaaoud, pictured at the top of this page, is neither a Fleming nor a Walloon. He is some kind of Muslim Arab. Then why does the NYT feature this headline?
Belgian Who Fought for ISIS Masterminded Paris Attack, Official Says
By Kimiko De Freytas-Tamura, Aurelien Breeden And Katrin Bennhold, NYT, November 16, 2015
Well, the answer is that the just can't say that he's either a Muslim or an Arab—all they can bring themselves to say is what kind of passport he holds.