User blog comment:Ducksoup/Why We Don't Unblock You/@comment-26258387-20150930201223/@comment-25035274-20151002152150

What happened to it is that this isn't the same society it was 300 years ago. Modern society does not really look kindly on people who are disrespectful to everyone they don't happen to have a long, outstanding history with. We hold, as a society, that people are entitled to a certain level of common respect until such time as they prove themselves unworthy, and civility is something of a given even if you don't particularly like or respect someone.

To put it another way: You wouldn't view it as acceptable if I were to walk up to you, without knowing you, and start insulting your mother and/or your heritage. You expect a certain amount of common respect, even from strangers. So why should administrators not expect the same?