My two cents

"I disagree with what you say, but I'll defend to the death your right to say it." It's a phrase heard often in debates, especially in a controversial topic. It sounds like a very noble sentiment, but it bothers me the more I hear it. I agree that free speech is important - it seems that all of the worst dictatorships were quick to strike that freedom down. The problem is, there is no reason to point it out except as a way of proving ones superiority over an opponent.
There is a smugness that comes with saying that - it's a way of saying that not only am I right, I am better than you because I will allow you to say what you want, no matter how wrong you are. Unless you are actually having a discussion on free speech, there is no reason to say it other than to make yourself look better than your opponent. How does it make a difference on the morality of abortion if you are willing to hear me say my peace? How does the existence or not of the holocaust rest on the fact that you will let me say what I believe, even if you disagree? The fact is, those issues don't change because you allow me to say what I believe - the issues stay the same. The only difference is, now you look like you are magnanimous and more understanding and a better person, and maybe that will sway some people.
Like I said, it comes across very smug and can even be almost taunting. It doesn't change the issue, and in fact probably hurts your chance of swaying the one you are arguing with because now they think you are a magnanimous jerk with a superiority complex.
Anyway, that's my two cents, and you can agree or disagree as you like, but frankly, don't tell me that you'll allow me to speak. I already have.