Government and police spokesmen would have us believe that the carnage in Jerusalem on Wednesday was unavoidable. Husam Taysir Dwayat, the convicted rapist, burglar and drug dealer turned jihadist who mowed down innocent people with his bulldozer on Jaffa Road was not suspected of links to terrorist organizations. The sociopathic, violent criminal who had "returned" to Islam over the past month raised no red flags. There was nothing to be done. No one is to blame. If the protestations of the government and the police that nothing could have prevented Dwayat from using his bulldozer to murder three people sound...