I always suspect he has some mental disease (besides the fact that he has cancer). Maybe to be very Likah Zehut him and assuming the best we can say that he is wrong, BUT perhaps he is doing this thinking he is saving lives by trying to difusse the situation and relax tensions and not have Arabs attack more Jews because of this. I know and understand that this is all thinking small and not in the ultimate benefit of Jews but perhaps might be what he thinks. But anyway him even going a step furthur and saying "allah hu akbar" is completely disgusting and beyond explanation.