The reason why you heard first about muslim terror in Holland (except for Spain, Madrid bombings) has two words : Pim Fortuyn.
In Holland Pim Fortuyn went from 0 to 33% in one year, after having gathered the most votes in the Rotterdam elections.
One of the reasons was that he was the first candidate that challenged the western pro-muslim immigration and anti-Israel agenda.
They murdered Pim Fortuyn, five days before he would participate for the first time in the national elections.
Two and a half years later they are so afraid of Pim Fortuyn, that directing a film about him (Theo Van Gogh) is enough to be sentenced to death.
In the case of Pim Fortuyn a "green activist in defense of animal rights" was used to cover-up the murder.
In the case of Van Gogh they don't have to use this kind of fantasy : the muslim suspect is just a good reason to increase (yes, that still is possible ...) the dosage of "Islam is the religion of peace" in the media and provide protection to mosques 24 hours a day with police.
The protection that was denied to Van Gogh.