It's not quite the same. If TV3 were to report that there are paedophiles preying on children in Tesco, drug addicts shooting up in the aisles and alcoholics starting trouble in their shops, I suspect they'd very quickly get sued into oblivion.
You may not have to prove it's false; it depends on how the law works. For instance, I understand that in libel cases the accused has to justify what he published. I'm not a lawyer, so I don't know exactly where the law lies in this situation.
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