Crimes Act 1900

Whosoever knowingly joins an unlawful assembly or continues in it shall be taken to be a member of that assembly, and shall, on conviction before the Local Court, be liable to imprisonment for a term not exceeding six months or to a fine not exceeding 5 penalty units, or both.

Whosoever being armed with any weapon or loaded arms, or with anything which used as a weapon of offence is likely to cause death or grievous bodily harm, is a member of an unlawful assembly, shall be liable, on conviction before the Local Court, to imprisonment for a term not exceeding twelve months or to a fine not exceeding 10 penalty units, or both.

Any assembly of five or more persons whose common object is by means of intimidation or injury to compel any person to do what the person is not legally bound to do or to abstain from doing what the person is legally entitled to do, shall be deemed to be an unlawful assembly.