In the 1950s the Red Menace was everywhere and it was so prevalent an Australian Prime Minister won election with the promise to outlaw the Australian Communist Party.  

So what did some pissed off Jehovah's witnesses have to do with stopping the Governor General issuing a decree that the Australian Communist Party was illegal? All will be revealed in the video below about one of the most important constitutional law cases the High Court of Australia has ever decided: Australian Communist Party Ltd v Commonwealth (1951) 83 CLR 1.