Which is why there is a distinction between sarcasm and irony.
My family is heavy into the use of Irony, trained from birth. My five year old nephew could kick most peoples ass with his use of Irony, lol. Outside the family though, I have to tone it way way down. (Even on this site, even talking to other INTJs I tone it down to be safe, most of the time) because people don't make the distinction, believing that all Irony is Sarcastic, and therefore meant to cause harm. A significant majority of people react to the idea that what you said was sarcastic, and therefore mean, regardless of the content you used.
"Because it was 'sarcastic' it was offensive. Therefore, I hate you."
This is understandable, because there are a lot of sarcastic a-holes out there being jackasses.
I have also come to the realization that southern Oregon society is actually rather more into Sarcasm than the rest of the states (which is already worse off than the rest of the world). We are simultaneously seen as one of the nicest states, next to Texas and a couple of others, and much more sarcastic inter-personally.
The key complaint I have heard about Americans is that they are "Rude and Sarcastic". They are considered rude for the fact that here money is everything, so even the nicest of American comes across as an a-hole in other countries because "I have money, give me service". Here in America that is pretty normal, even the lowest class will act that way when they have money because that is just how society here has formed. With a lawsuit around every corner, most businesses are all too ready to please someone with money, and far to lax to refuse service when they are being an a-hole. People without money are treated with an equal amount of disdain. A person's class is always in flux, depending on A: how much money they have, and B: how much they are currently spending. If you went to the restaurant last week with four friends and spent a few hundred dollars, they love you. If you went in this week with your so to have an couple drinks and an appetizer, they can't wait to get rid of you. If you have money you are treated like the royalty, regardless of where you live or what you do for a living, for the unwitting average person, this comes to be expected. That expectation is what makes them rude to the rest of the world.
Meanwhile sarcasm is socially unacceptable in most other countries. The only country I know of where "Irony" is a heavy part of social discourse, would be England. English humor generally maintains that line between Sarcasm and Irony, which makes it funny. The reason American remakes of English comedies are so bad is because the English comedy relied on cleaver use of Irony, and the American writers adapted it into blatant Sarcasm (Because American audiences are blind to subtlety). It really irritates me when something subtle comes up, and then one of the characters proceeds to explain it to the proverbial "idiot". The idiot in the show is there for the audience, giving the characters someone to "explain" things to. So much subtle Irony gets ruined by the blatant "in your face" Sarcasm used to "explain it".