Freedom of speech is quite the whore. It is to be used by anybody and for whatever purpose, even ill-fated ones. Lies and truths are welcomed all the same, because that cheap wench is open like a casserole at a garden party: anybody can stick their tongue in and have a lick.
And, like any sexy call girl, it is usually the object of jealousy from people that don't fully grasp how these things work. You've seen it happen: one party has an opinion and uses freedom of speech to tell the world about it; a second party comes along that disagrees with that opinion, and also uses it to tell the world about its disagreement; then the first party wants to take away the freedom from the second party, as if it should belong only to one. Like a gambling man in love with last night's hooker: he should have known that he's not the only customer worthy of her loving embrace.
Freedom of speech is a prostitute that can be used free of charge by anyone. To think that its usage depends of the circumstances, is hypocritically postulating that only certain opinions are allowed to spend the night with it. Unfortunately for those opinions, and fortunately for the rest, every opinion gets the same sticky turn as everybody else.
Homophobic creationists, holocaust deniers, biased scholars arguing why we should relieve tax burden from billionaires, and lobby-paid pundits talking about how a war will bring peace, are exactly the same in the semen-painted face of our beloved harlot as scientists talking about evolution, and civil-rights defenders.
Why? Because when it comes to being free to speak my mind, it doesn't matter if I'm right or wrong or crude. It's my speech, and I have the right to speak it whenever, wherever, however I want, regardless of its veracity or prudence. Don't worry, though. There'll be quite a lot of other people that will call me out if they think I'm wrong, and they'll do it by banging that same open-legged trollop in much the same way I did.
It's a free market of speech, and like most free markets, it has the ability to balance itself out. Why not trust it will? Why is it that whenever a lie is provided as a fact in a public setting, a big outcry always roars to censor the liar? If I didn't know any better, I would think that people are not only jealous of somebody else caressing their courtesan, but that they have a sadistic itch that needs to be scratched. That the people are drawn to the idea of forcing our legal system, supposedly unbiased, to silence very specific ideologies. Like a choke ball forced into a victim's mouth, providing terrible precedence for any future bearer of an unpopular opinion. And, worse yet, it's counter-productive: the liar can masochistically welcome the censorship-choke-ball, making it easy for him to pose as a martyr, causing more attention to his lie.
A more elegant and, frankly, more effective way is entrenched in the bosom of that same old tart called freedom of speech: if somebody tells a lie publicly, provide the world a verifiable truth to counter it. When an alternative is brought forward that is more convincing than the lie (either by form or content), people will flock away from it eventually. And whoever stays behind with the lie, are masochists that will never change their mind anyway.
Like everybody else, you are free to shove your speech right up the freedom-lubricated rectum of that libido-packed fille de joie, to tell the world how reality really is... according to you... And if somebody else has a different perspective than you: just pull out, wipe yourself, and let them take their turn. It'll be yours again soon enough.
As a wise imp once said, "When you tear out a man's tongue, you are not proving him a liar, you're only telling the world that you fear what he might say."