Im not going into a full diatribe here, as no one here wants to read it. But one point: Censorship does not necessarily undermine the pursuit of truth. We could trust the censor to filter out the untruths, and allow only the true ones to get through.
But
This assumed an infallible censor.
If youre truly interested, I suggest you read John Stuart Mill’s essay On Liberty. He succinctly words it better than I do.
Though JS Mill was a huge supporter of imperialism, particularly the British colonization of India. He was employed by the British East India Company for much of his life.
That seems to embody the impossible paradox around the issue of 'free speech' and liberalism in general.
"We're going to give you our idea of liberty, whether you want it or not"