>>512878689 (OP)
This is completely unrelated to the position on a supposed "political spectrum".
It's all about fear. The fear, that the people may end up voting for someone else, if you don't censor every word they say.
The right-wing does it, the left-wing does it, the self-declared "moderates" do it as well.
Whenever a political power thinks, it's in control, it turns to censorship in order to secure it.
Traditional media were easy to control.
With the modern media it's practically impossible: There will always be someone that disagrees with you and that will make his voice heard.
Politicians absolutely fucking hate that and want it to end. NOW. For OurDemocracy.