> In reality though, laws have been limiting speech for hundreds of years, and those laws and judgements are enforced by the government. The idea that it is sacrosanct and is (and should "continue" to be) unabated is already not what happens. The usual example is about shouting bomb in an airport or fire in a crowded movie theatre but those are more about mischief than any freedom to say a thing (you aren't punished for the words alone). However, Libel and Slander laws exist and have for a long long time and are limits on free speech.
Why is it that I have never heard these laws cited outside the context of justifying additional restrictions on freedom of speech, and especially restrictions on political speech? Without digging for an example, when is the last time you personally encountered someone who was prosecuted for saying a naughty word in a movie theater or saying mean things about someone online?