WANTED: Tanya Plibersek MP. Guilty of Crimes Against Humanity. Responsible for poisoning 22.9 million Australians with the toxic industrial waste - fluoride.

Crikey. What a yarn. The Federal Health Minister poisoning the entire population? The International Criminal Court better clear some room.

It's bollocks, of course. But it was right there on South Australian independent MLC Ann Bressington's Facebook page. Along with a comment about lynching Ms Plibersek. Charming.

Ms Bressington was just one year into her eight-year term when she said she was fed up with being a pollie, but she's starting to look like she will not go quietly when her term is up next year.

That's a shame.

She is dedicating considerable time and energy to promoting fringe conspiracy theories, anti-scientific thinking and outright rubbish.

Recently she gave a rambling speech about the Club of Rome and Agenda 21, about shadowy figures creating crises such as global warming to condition us and control our lives. If that sounds garbled, then it's an accurate reflection of the entire speech.

She has been posting about communism by stealth and dragging other bits of flotsam and jetsam out of the murky depths of the internet.

Then there's the fluoride stuff. I asked her if the accusation against Ms Plibersek was a joke and she replied that fluoride is a toxic poison. She said she didn't post or share the image, which suggests her Facebook has been hacked. Probably another conspiracy.

Independent Senator Nick Xenophon is remaining diplomatically quiet about his former comrade, who coasted into Parliament on the coat-tails of his popular vote.

Sometimes, ignoring these things is the best option.

But not when we have a public figure, on the taxpayer teat, in a position of power, in a climate where every now and then the conspiracy theorists get to influence public policy.

In Queensland, the Newman Government has revoked compulsory fluoridation of water to appease people who believe it is poisoning us - or worse, part of a government conspiracy to medicate and control us.

Ms Plibersek reassured The Advertiser there was no mind-control conspiracy in the water, just fluoride, one of "the most effective public health advances in decades".

I suspect there's something in Ms Bressington's water.

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