Police v Newnham - [1978] 1 NZLR 844

Criminal law — Offences — Obstruction of police — Demonstration — Whether orders of a superior officer are sufficient to give a constable an apprehension of an impending breach of the peace enabling him to arrest a person who is not engaged in any conduct unlawful per se — Whether police infringed right of free speech by denying demonstrators access to a public street — Police Offences Act 1927, s 77.