Conveniently enough, some Arabs were busy filming their fellow Arabs throwing stones at passing Israeli cars in Hebron, as other Arabs stood nearby (initially) unperturbed by the fact that right next to them, their fellow Arabs were attacking Jewish drivers on the road.
What the Arabs were not expecting, was that the justifiably enraged Jews would actually get out of their car and start throwing stones back, and simply going berserk in response to the violence they were just subjected to.
That got the Arabs upset.
Though in terms of aim, sorry Noam, but you’re not going to be starting for the Yankees.