Hamas does operate in West Bank:
Hamas holds massive West Bank rally, testing Palestinian unity deal - Israel News, Ynetnews
Not sure if Hamas operative is involved this time, but Hamas definitely encourages such actions.
I normally dont make such threads. Just to show that stone throwers are not a joke.
As I said if Israel was deliberately targeting Palestinian children, there would be dozens of killed, while in reality
there was not a single killed or serious casualty in half year of Jerusalem riots. In same time when u have violent riots inside a city its impossible to prevent collateral damage completely.