further Facebook posts following criticism for posting the cartoon, Yair Netanyahu, who is a university student, condemned the Israeli left for being two-faced in trying to silence him.

A family spokesman said Yair Netanyahu would not be making any other comment. The prime minister refused to ask questions from reporters about the post on Sunday morning at the start of his weekly cabinet meeting.

Last month, the son made another headline-grabbing post after a protester was killed during a white nationalist rally in the U.S. state of Virginia.

It appeared to suggest that hard-left organisations now pose more of a danger than neo-Nazi groups, which he wrote are a dying breed.

In July, Netanyahu junior found himself in a bizarre social media row over dog poo.

A neighbour of the family said onFacebook that Yair, who lives with his parents, responded with an obscene gesture and walked away after she had asked him to clean up the mess left by the dog he was walking in a park.

The post went viral. A family spokesman said at the time that the woman had behaved aggressively and “Yair does not know if Kaiya (the dog) did defecate as (she) alleges”.

Some critics in Israel suggested Netanyahu’s online activities were meant to deflect attention from his parent’s legal troubles.

On Friday, Israel’s attorney-general said he was considering indicting Sara Netanyahu on suspicion of using state funds for personal dining and catering services amounting to some $100,000 (£75,778).

Benjamin Netanyahu, who has served as prime minister for 11 years, spread over four terms, is being investigated by