CRIMES ACT 1914 SECT 30C

Any person who by speech or writing advocates or encourages:

(a)

the overthrow of the Constitution of the Commonwealth by revolution or sabotage;

(b)

the overthrow by force or violence of the established government of the Commonwealth or of a State or of any other civilized country or of organized government; or

(c)

the destruction or injury of property of the Commonwealth or of property used in trade or commerce with other countries or among the States;

shall be guilty of an offence and shall be liable on conviction to imprisonment for any period not exceeding 2 years.