These kids live close to the first checkpoint to for getting to the Ibrahimi mosque. As palestinians are not allowed to pass the first checkpoint, they assumed we were Israelis when we returned. They started to throw small stones at us, most likely because they are angry that they can't go past the checkpoint just in front of their homes. And they believed we were causing that. Luckily no one got hurt - and they stopped when our Palestinian guide (whom was stopped at the first check point) stopped them.