I am afraid to blog. I could write about my career and my hobby, but those do not seem to be interesting for others. My opinion may be interesting, but it is risky because something I write may come back to offend others one day, or get me in trouble. One time ago I considered blogging anonymously about the economy but doing so anonymously felt disingenuous.
The solution is simple. Treat all people as people. If you can't, don't talk about them.
Edit: Perhaps projecting my opinions I assumed you were talking about political correctness. However re-reading your post I am not so sure that's what you meant.