There is governmental policy to protect Semites as if it's a law. Maybe that's why Herzog assumes that he rules. He has publicly questioned Australians' actions in protesting against him but not against Iran. 

Foreign heads of state are diplomats at the highest level on state visits, with diplomatic immunity.

'Non-Interference Rule: Article 41 of the Vienna Convention on Diplomatic Relations mandates that, despite immunity, persons enjoying it have a duty to not interfere in the internal affairs of the receiving state.
Scope of Interference: Engaging in local political activities, criticizing local laws, or attempting to influence the host country's domestic politics is considered a major violation.'

No, not a public opinion about the population's politics. You can read.

What did Xi say to locals about Australian politics?
The Iranian was expelled for this reason.