A professor also showed BBC Panorama how he found someone within moments on Telegram who offered to ship an Uzi submachine gun to the UK for £850.

Later reports claim that it might be further east, near a village called Uzi.

Later, the TV put it farther east near the village of Uzi, but details remained contradictory.

Cross said his family is participating “so that no other child will have to go through what Uzi did. No other parent should have to go through what we have.”

A keynote speaker at rallies, Uzi Sharbav, was convicted of taking part in the murder of three Palestinians in the 1980s.