QUOTE(Guardsman Bass @ Jun 25 2007, 10:21 PM)

Freedom of expression, within its legal context, usually means the right to express onesself or speak freely as long as it isn't
A)Slander/Libel, done with malicious intent (public figures have a much harder time proving this); or
B )Fighting Words, speech done that has the direct capability to cause violence, like provoking a mob to go lynching; or
C)Lewdness (at least in America), usually sexual-related expression that does not serve a 'real purpose' (aside from human pleasure, of course).
Although I disagree with C, as it stands, you are and ought to be free to say what you want as long as it fits into the above. For example, while writing falsely in a newspaper that the Pope is a pedophile is almost certainly libel, calling him a homophobe is not, or can be argued not to be. So, to the original OP, I would generally agree that regardless of how offensive it is, it ought to be allowed (within the above rules, and also within reason; like not allowing 'snuff videos').
I understand what you mean, and to a big extent I agree. Although continuing your example of the Pope in the newspapers, if I did it without any real proof, regardless of the result, I would have gotten the intended result because some might think "Oh look at that, how that man is evil. Bad bad person. What a sick f***", and even if the Vatican showed undeniable proof of the contrary they woud still think the same thing and believe the Vatican is just covering it up inventing proof.
Now, that's only regarding to your example.
You're drawing some kind of line with the slander, fighting words and lewdness, but the problem is, journalists many times don't follow that guideline and do whatever it takes to prove their point and fill their agenda, because there is NO such thing as objective journalism. Sure, some are less biased than others, but completely objective, no, it doesn't exist. And with the avalanche of information that we get these days, it's can be quite easy to take the information at face value.
Maybe that's why I take 99.9999% of the news with a grain of salt

Now, regarding GW's post:
Yeah, you can change the channel if you don't want to see it, but the problem was that here, in Chile, MTV is available only on cable TV. And what do you if lots of people that are paying for your service pop up asking to ban a program? Ignore them? THAT was the problem.
You wouldn't know the fuzz that happened around here. I remember that when I went to church one Sunday there was people giving pamphlets saying why Popetown should be banned. They have every right to do so, and some of their arguments were quite valid (for instance, that freedom of expression is not an end on itself but rather a means to a higher purpose, the truth. I agree with that

). But, in another way, I thought that because of the fuzz that generated here, MTV got precisely the result it wanted: ratings and money. You know, controversy=money (if you don't believe me, ask Dan Brown

). And it revealed what Popetown really is: a brilliant marketing move