Well.. we live in a small country with 16 million people..

So if you want to live together their are some rules of engagement.. You cannot insult just anybody, which I dont think is a bad thing.. but the borders of what you can say or cannot say are pretty vague... you can say a lot overhere because most people dont let themselves be offended.and wouldnt press charges...
Anybody could press charges if they are grieved in any way.. off course that doesnt mean you will be convicted..

The procecution did not want a trail but the court wants to clarify those borders and think this is a case where they could do that..

I would realy doubt that mr Wilders will be convicted but I think he likes all this attention anyway..

I think this a bit more balanced article on the subject..

nrc.nl - International - Geert Wilders prosecuted for hate speech