This article by the Institute of Public Affairs, from 2012, explores how hate speech laws have their origin in Soviet Union laws, and Soviet advocacy.

It specifically mentions the ICCPR and CERD treaty, both of which the Commonwealth invoke as justifications for these hate organisation laws, and how the Soviets advocated that ‘freedom of speech and the press should not be used for the purposes of propagating fascism, aggression and for provoking hatred as between nations’.

The article lists out a whole series of quotes and instances from the Soviet Union where they sought to insert clauses that abolished free speech, and largely got what they wanted with both the ICCPR and CERD treaties.

The Australian delegation at the time, even argued ‘people could not be legislated into morality.’

https://ipa.org.au/ipa-review-article/the-soviet-origins-of-hate-speech-laws