Kim, I agree they have the right, but I'm not sure I can agree that they should exercise that right. After all, all of us have the right to tell people, "Your house is ugly, your dog is smelly, your religion is nonsense," but etiquette dictates that we don't needlessly cause offense.
They may not know better. And, there are cultural differences that are easy to overlook. If someone comes to our forums who has no respect for women, for example, we would expect them to be considerate of our female members but they may not be able to out of their beliefs and customs.
I am insisting that I can hold people to standards. (Miriam)
You are insisting that I can't. (Michael)
I don't expect anyone to meet my own standards because for starters, I would be disappointed

But that aside, my standards are different than others, so whose standards are the best to adhere too?
When we see someone saying something we would never say, we can't shoot them. We can block them, or not leave comments or otherwise ignore them - or, stand up and say, "Hey, I would like to listen to what you have to say but your choice of negative words spoils the discussion." They will scorn you for saying so, of course, but you have represented your own integrity all the same.
Michael wrote:
The demand to not be offensive is as offensive to some people as anything else.
Yes. Take for example Rae Hoffman. She is famous in the industry for her use of swear words in Twitter and her blog at times. She projects a certain image that many people find distasteful. Anyone who suggests to her that she has a bad mouth is shot down by her. It disgusts her. She has quite a following, regardless of how she expresses herself. It's interesting to me because she's incredibly smart and good at the work she does. And yet many people can not get past her rude and crude language. Is she wrong? Does she not meet certain standards? Yes. And she would say so what? Who says she has to meet anything other than own set of personal standards? If we can't handle her behavior, she could care less.
I agree with much of what Michael wrote and yet have seen him in action. It's not always pleasant. His character is such that when he spots a "wrong", in his opinion, he set sout to correct it. It gets him into trouble if he goes against any sort of popular belief. Is he wrong to speak up? No. Is he wrong when his words are critical, cut throat, and he comes across as unbending? No. However, if he makes it personal, then its understandable that the persons involved will be hurt.
When I was under attack all last year by Bill's girlfriend, I learned there was no such as thing as communicating with her. She was the type who, once she hates someone, there is no wiggle room. In her case, she is mentally ill, but in my opinion that was no excuse to personally attack me and others in the SEO industry. Being sick is a poor excuse for bad behavior.
There are many people on the Internet who are unstable, high, or drunk. There are also commentators who know how to rally up emotions and get people upset. They thrive on it. I'd like to say the way to handle these situations is to ignore it but that advice clearly doesn't work in a world of live news, reality TV and Twitter.