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From "alternative facts" to the most outlandish fringe conspiracy theories - we're now living in the age of disinformation.
We all became familiar with Russian groups using Facebook to spread fake news and sway the outcome of the 2016 US presidential election.
But disinformation spreads far wider and much deeper.
Ed Coper is an expert in disinformation and in his new book Facts and Other Lies, he explores how disinformation has fractured our society, and threatens democracy itself.
He says the anti-mandate protests which have spread from Ottawa, to Canberra and Wellington are the end product of deliberate disinformation campaigns, which are fuelled by social media and seeded by shadowy forces with suspect motives. Kathryn speaks with Ed Coper from Sydney.
