I honestly want to know how is it allowed for someone to humiliate and make fun of something that is sacred to other people/culture. 'Free speech' I know, but when does someone's right to express themselves ends? Doesn't (or shouldn't) it has its limits? There are many other instances where you can't get away with something just because it is free speech. How come guys like Julian Assange are not protected under 'fre…
Because then claiming offense becomes a sword, not a shield, and can be used to shut down legitimate criticism.
For example, saying "There is no honor in honor killings" can be very offensive and humiliating in the wrong crowd, but it is nevertheless a discussion which needs to be held anywhere honor killings take place.
Similarly, there are disingenuous morons in my country who claim all criticism of Israeli policy is anti-semitism. That can't possibly be considered valid. If it was, nobody could criticize Israel, which is obviously what the morons want, but a free society can't allow that.
> How come guys like Julian Assange are not protected under 'free speech'? How about people who sign NDA's?
You can't use "Free speech" as a way to get around other laws, including contract law in the case of NDAs.
> How come it would be heavily criticized (and probably illegal) for a newspaper to start running weekly cartoons where they make fun of the black population in America, depicting them with the all the token representations and slurs that are now widely accepted as 'racist'?
The KKK is a legal organization in America. David Duke is a legal human being, and is legally considered a human being despite evidence to the contrary, and legally has the right to say everything he's said, past and present.
http://en.wikipedia.org/wiki/Ku_Klux_Klan
http://en.wikipedia.org/wiki/David_Duke
And then there's the Westboro Baptist Church:
http://en.wikipedia.org/wiki/Westboro_Baptist_Church
I fear your understanding of American free speech laws is quite flawed.
> Are there some written rules about this
Yes. A lot of them are in court cases, where judges have made decisions which bind on other judges. This is how a Common Law system works.
> or is it just the result of how things are perceived by the majority of the public (i.e. what we like vs what we don't)?
No. If it worked like this, the Westboro Baptist Church, for example, wouldn't be legal.