The Dutch people believe they have become the MOST ignorant nation of the planet earth!
Want a practical solution? The Kingdom needs to declare a ninety day state of national emergency and suspend all civil liberties. Break down doors if need be, check papers, and clean out the cancer to an awaiting ultra-high security prison in the North Sea, where detainees can be interrogated, biometrically measured, and deported. Clamp down on suicide-pact like immigration policies, put extra security on the borders and ports, and go into overtime updating computer criminal databases and intelligence assets. Some might call those draconian measures, but extreme circumstances often require extreme solutions.