The Limits of Freedom of Speech

I'd just be curious to hear how you think about freedom of speech and its limitations. The justification or the rationale for freedom of speech is that in the contest of ideas, the truth will prevail. I'm surprised that there hasn't been a movement to discourage people from advertising on Fox News,. If I was an American, I would be feeling really abused by that whole episode. We have to start holding people to account.