That’s actually an interesting challenge. It’s just good manners not to offend someone you are communicating with. Makes sense, keeps the society going and has done so for millennia. Til now the number of people you might be communicating with has been geographically limited and therefore avoiding offense was doable. But now the interweb not only expands the number of counterparts, but makes it very difficult to know, what might be offensive. Two ways this can go, I think. One, people learn not to consume things they find offensive and be less offended by things. Two, this communication challenge will serve as an balancing loop for globalization and shrink the world back down to where we can still manage. I’m afraid, it’s going to be the latter.