The United Kingdom is once again debating the limits of speech, this time over a proposed definition of “Anti-Muslim Hostility”.

On its face, the goal sounds reasonable. No one should face harassment or violence because of their religion. Protecting people from genuine harm is a legitimate function of the law.

But as many commentators including Christian Concern have pointed out, the proposed definition is so broad and loosely framed that it risks criminalising legitimate criticism.

This is the recurring problem with modern “hate speech” frameworks. They are often drafted in sweeping and ambiguous language. They focus on subjective offence rather than objective harm. And they blur the crucial distinction between attacking people and debating ideas.

Under proposals of this kind, criticism of Islam – even theological disagreement expressed by Christians, Jews, atheists, or reform-minded Muslims – could be interpreted as hostility. That places freedom of speech and freedom of religion on a collision course with vague regulatory power.

Some reports have even suggested that Iranian dissidents in Britain fear speaking openly against the Iranian regime, concerned that robust criticism could be mischaracterised under expanded hostility definitions. Whether or not those fears materialise, the very fact that they exist illustrates the chilling effect such laws can produce.

A free society must allow the open exchange of ideas, including competing religious ideas. Christianity, Islam, Judaism, Hinduism, secularism – all make truth claims. Those claims must be able to be debated, challenged, and defended without fear of state sanction.

This debate comes at a time of heightened tensions across the West. In Australia, we have witnessed large protests against visiting Israeli leaders and heard chants of “globalise the intifada.” Rising hostility toward Jewish communities is real and deeply concerning.

But vague speech laws are not the answer.

The law should focus on actual calls to violence and violence itself. Incitement to harm, threats, intimidation, and physical attacks are rightly criminal. Mere criticism, satire, theological disagreement, or political argument are not.

When governments respond to social tension by expanding ambiguous “hate speech” definitions, they risk suppressing lawful debate and undermining pluralism.

The solution to bad ideas is better ideas.

And the protection of communities must never come at the expense of the freedoms that allow a diverse society to function in the first place.