“What has been will be again, what has been done will be done again; there is nothing new under the sun.” – King Solomon c300 BC
The defense of free speech is one that is fought every generation – and never more fiercely than when a new medium of communication is born.
This is a great, short article to be reminded of some of the key ones.
https://life.spectator.co.uk/articles/four-defences-of-free-speech-that-everyone-should-read/
And if you want a more thorough exploration of the history and issues, this series on BBC sounds is truly fascinating.