Pre-screening MAY rule out some dangerously unstable participants, but without specific threats, predictions of violence are unreliable. However there appears to have been bizarre behavior and threats that peers witnessed and reported: behavior such as this prior to the killing should never be tolerated. If it is true that supervisors in the program were informed of Hershkowitz's behavior and didn't act immediately, this makes them complicit in the disaster that followed. Such programs would be wise to have psychological backup immediately accessible, including crisis hospitalization. My heart goes out to the family of the murdered chef, Abed Armando Shukhallah..
5 wounded Syrians rushed to northern Israeli hospital (Haaretz)