Australia.

Communist Party Dissolution : no. 16 of 1950 : an act to provide for the dissolution of the Australian Communist Party and of other Communist organizations, to disqualify Communists from holding certain offices, and for purposes connected therewith. Communist Party Dissolution Act 1950 (Canberra : Commonwealth Government Printer, [1950]) [from the collection of W. H. Tregear]

The preamble to the Act sets outs the government's perceptions of, and objections to the Australian Communist Party,

Whereas the Australian Communist Party, in accordance with the basic theory of communism, as expounded by Marx and Lenin, engages in activities or operations designed to assist or accelerate the coming of a revolutionary situation, in which the Australian Communist Party, acting as a revolutionary minority, would be able to seize power and establish a dictatorship of the proletariat:

And Whereas the Australian Communist Party also engages in activities or operations designed to bring about the overthrow or dislocation of the established system of government of Australia and the attainment of economic, industrial or political ends by force, violence, intimidation or fraudulent practices:

And Whereas the Australian Communist Party is an integral part of the world communist revolutionary movement, which, in the King's dominions and elsewhere, engages in espionage and sabotage and in activities or operations of a treasonable or subversive nature … (p. 2)