For unrelated crimes. Nonetheless, this is an interesting development as it reminds us that anyone can become radicalized. Europe has a bigger terror problem than the US because the massive number of alienated Muslim youths who become radical because they want to belong to something. But as long as violent interpretations of religion exists, we can never have perfect security.
The problem in Europe seems to be much worse because of faux-multiculturalism which in fact turns into ghettos and segregation and disenfranchisement. In the US the Muslim population seems much better integrated, but still extremist attitudes seem to be present even there. I don't see any reason why any regular/moderate Muslim should tolerate attitudes like the ones I posted on the first page in their communities and mosques. Those should be called out and condemned on the spot and precisely Muslims are in the best position to do it.