Earlier quoted context omitted.
So are they not allowed to write about the "far right" or doesn't it exist according to you?
As someone mentioned somewhere, there are more articles in mainstream media mentioning Ku Klux Klan than there actually are KKK members. The far right exists and is potentially dangerous, but overconcentrating on it will let other dangers fly under the radar.
FYI: this is not just the US. Far right groups organise all over the world there.