They haven't done it yet so I don't think they ever will. The only anti-police uprising in bongland will be the new muslim natives killing the last few White cops.
Australia, being based on British Law has a version of "behaviour likely to occasion a breach of the peace"
He's hooked on the "obstruction" part, which is not a necessary part of the law.
Under such laws if your behaviour is likely to cause *someone else to chimp out* no matter how reasonable you are being, you can be asked to move on, as in this case, or arrested - also as in this case.
_There is no right to free speech outside the USA_
S. 6(1) amended by Nos 43/2011 s. 48(2), 37/2014 s. 10(Sch. item 160.2).
(1) A police officer, or a protective services officer on duty at a designated place, may give a direction to a person or persons in a public place to leave the public place, or part of the public place, if the police officer or protective services officer suspects on reasonable grounds that—
(a) the person is or persons are breaching, or likely to breach, the peace; or
(b) the person is or persons are endangering, or likely to endanger, the safety of any other person; or
(c) the behaviour of the person or persons is likely to cause injury to a person or damage to property or is otherwise a risk to public safety.