I'm walloon, but I studied in Flanders for quite some time, so I guess I have a pretty accurate view of what people think of each other on both sides of this preposterous language frontier. The observations are frightening, really : some political parties on both sides have succeeded, with the helping hand of the media in search of communitarian sensationalism, into creating false images of the walloons and flemish people. Stereotypes, if you will, that are so strong they are anchored in most of the common people's minds by now. Unfortunately, most people are too lazy/stubborn to confront those stereotypes with the reality.
Let me give you some examples:
Walloons are greedy, lazy and profit from a very generous amount of money earned by the hard-working Flemish people. That's the kind of thing you would hear from De Wever's filthy mouth...
Flemish are frustrated farmers, and xenophobic too. They want to make the walloons pay for what's been done to them in the past. That's the kind of thing you would from a moron like Maingain or Happart...
Those stereotypes are so far from the truth that I won't even try to spend energy to debunk them.
Now, how can we still efficiently functionate as one country when the people's trust in each other is blasted away by such words ? We still don't have a government, and frankly, it doesn't surprise me. It's gonna make things worse, though... Voters on both sides will tend to be more radical the next time they'll send us to the voting booth, that's what I'm afraid of.