At least here it looks to be defamatory it has to be untrue. This one illustrates some fuzziness in Australia.
Surely defamation is the real threat to free speech
Opinion The Drum By Jonathan Green
Updated 3 Apr 2014, 2:36pm
The Racial Discrimination Act seeks to curb a very narrow range of behaviours.
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Even the most vigorous champions of free speech have at times been tempted to defend their reputations by using Australia's powerful defamation laws, writes Jonathan Green.
One test of honest conviction is consistency. If you are a doughty defender of free speech, then you should reasonably be expected to apply that principle universally, in all circumstances, without fear or favour.
Which makes you wonder why the folk who have railed of late against the provisions of the Racial Discrimination Act's section 18C don't also have a problem with defamation.
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In the brave new sunlit uplands of the proposed post-18C world, I will be able to call you a nigger. But I still won't be able to call you a thief. Spot the consistency in that.