Mackay v Bacon

The plaintiff, Mr. Mackay, a licensed slaughterman and carcase butcher, sued the defendant for oral defamation. The alleged defamatory statements were made by the defendant at a public meeting of a ratepayers' association convened to protest the administration of the Noxious Trades Act, specifically concerning a boiling down establishment operating without a licence. The plaintiff contended that the defendant's statements implied he was unlawfully bringing diseased carcases onto his licensed slaughterhouse premises and was recklessly indifferent to public health. The defendant pleaded not guilty and, in relation to the second statement, truth and public benefit. The Supreme Court of New South Wales refused an application for a new trial, and the plaintiff appealed to the High Court of Australia.

The High Court was required to determine whether the trial judge had erred in admitting evidence of the Chairman's speech and correspondence read at the meeting, and whether the judge had correctly directed the jury that the first defamatory statement could be considered fair comment. Furthermore, the court had to consider the validity of the defendant's plea of truth and public benefit in relation to the second statement, and whether the jury's verdict for the defendant was against the evidence.

The High Court affirmed the decision of the Supreme Court. The court held that the Chairman's speech and the correspondence were admissible as they provided essential context for the jury to understand the meaning of the defendant's words. Regarding the first statement, the court found that the judge had correctly directed the jury that it could be regarded as fair comment, as it was for the jury to determine whether the words constituted an assertion of fact or an expression of opinion on the plaintiff's conduct. The court also considered the plea of truth for the second statement, noting that the plaintiff had indeed brought diseased carcases onto his premises, and it was for the jury to assess the meaning and implications of the defendant's statements in light of these facts and the public interest in the matter.

The appeal was dismissed, with the High Court finding that the jury's verdict for the defendant was not against the evidence and that the trial judge's directions and evidentiary rulings were correct. The court concluded that the matter was of sufficient public interest to justify comment, provided it was not malicious and was relevant to the subject matter.