What are the limits of free speech? We may have arrived at them

By Matthew Sharpe, Associate Professor in Philosophy, Australian Catholic University

Political operatives on the far right have long spoken about their ambition to shift the “Overton window”. The aim is to “mainstream” ideas long considered unthinkable, through gradual, step-by-step radicalisation and repetition – especially on hot-button issues such as immigration, sexuality, race and identity.

If challenged, commentators respond by appealing to “free speech”, accusing their critics of denying this basic liberal right.

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