Mr. Rudakubana, who was 17 at the time of the attack, had been referred three times to Prevent, when he was 13 and 14, because of his fixation on violence. But on each occasion, it was found that he did not meet the threshold for further intervention under the program, in part because he had no known ideology.

But he wasn't right-wing or white, so they weren't interested... I'm guessing.

He had made ricin, a lethal toxin, and stored it under his bed, and had downloaded a PDF file titled “Military Studies in the Jihad Against the Tyrants: The Al Qaeda Training Manual,” which investigators believe he had used for instructions on knife and poison attacks.

Also, if you want to know what kinds of doctors and engineers are coming into Europe... check out his mugshot. Something quite different from his middle school pictures that the media were predictably using.