5. If the police have already issued a notice of prohibition regarding a public meeting or a notice of objection regarding a public procession, people still participate in the public meeting or procession. Do participants commit any offences?

A public meeting or procession held in contravention of a notice of prohibition issued by the police is an unauthorized assembly. Every person who, without lawful authority or reasonable excuse, knowingly takes or continues to take part in or forms or continues to form part of any such unauthorized assembly commits an offence.