Absurd comparisons between Pauline Hanson and Nelson Mandela have not helped to advance the debate. But a more useful comparison might be made with legal harassment of opposition politicians in countries like Singapore. It is not illegal to oppose the government there, but somehow opposition leaders seem to run afoul of the law a lot, notably with defamation actions. In particular there are strict regulations on the constitutions and financial affairs of political parties, which cause big problems for opposition parties.
Australia is not the same as Singapore. Nevertheless, I imagine the Hanson case will be quoted prominently in reply next time anyone from Australia criticises restrictions on the political freedom of our Asian neighbours.