Queen's Day Killer: Left? Right? Other?

Recall the maniac which decided to use the Netherland's Queen's Day festivities to go on a vehicle-borne killing spree earlier this year? The report seems to be in as it relates to motivation:

According to the report it is unlikely that T. acted out of a particular ideology or belief. Neither is there is any evidence that he harboured an extreme aversion to the royal family. But in 2004, T. apparently told a former employer that he "would be famous." He added as a joke that he was thinking of launching "an attack against the royal family".

It is plausible, the prosecutor's office said, that Karst T. didn't known that there would be a big crowd of people in his path. Although he honked his horn at the on-lookers, he didn't slow down at any point. He was going 112 km per hour when he hit the monument.

Who are we to say different in this case? What are notable, some may call them a "clue", are the dying words of Karst T:

According to the investigation Karst T. told military police at the scene: "Willem-Alexander is a fascist, he is a racist and I knew that the queen would come here."

Now, we have been around long enough to know exactly what type of modern-day individual bitterly clings to the knee-jerk/reactionary words "fascist" and "racist", even as they lay dying.

Any amateur Poirot in the audience want to make an educated guess as to motivations? It can be can be confusing.