The Personal Toll of Whistle-Blowing
For me there is a related issue that is just as problematic or worse.  There are certain things that are critical of the US government that are simply not allowed to be spoken in most US centric places. The public effectively censors itself.  I could mention some specific things but that would trigger it and then no one would see my comment.
In general you can get away with mentioning things from the distant past but nothing particularly heinous or recent.  I think that this is because people want to believe that their side has a moral high ground.