There's the false witness: Marxist authoritarianism. Who wants Marxist authoritarianism? I haven't met anyone who wants it. I supported Sanders because I'm a younger person who hasn't gotten the same economic shake that my parents and grandparents got. They had great benefits and pensions and affordable college, etc., a safety net that allowed them to pursue their dreams/goals. If we could have a return to the policies that made that possible for earlier generations, I think that would be a wonderful thing. Calling it "Marxist authoritarianism" is a way of making sure that the 1% engaging in their wealth extraction get to continue doing so unimpeded. When you buy into the idea that anyone who wants economic justice is a Marxist looking to steal away civil liberties, you let people like the Koch brothers an Jeff Bezos remake this world in their own image and you assist them in crippling regular folks who are just trying to make a decent life for themselves.
There was one particular example of this that really shocked me. A British biochemist and Nobel Prizewinner gave a short talk - possible an after dinner speech with wine - in which he explained how hard he found it to deal fairly with women in his lab, because he found he "started to fall in love with them" and then found it hard to criticise their work. This was obviously a rather gauche joke. Someone recorded this speech and it was played on the BBC news as the first item. Almost immediately he was thrown out of his Emeritus professorshup at University College London, hounded by the BBC and social media.
This kind of action has become all too common, and represents an atrocious societal change.
A related activity is the tendency to censor people if they say something uncomfortable.
An excellent recent example (reported by K9) of this was an article that Michael Shellenberger wrote in Forbes Magazine. This is a man who spent many years at the forefront of the Climate Change environmental movement, but had come to realise that the dangers were greatly exaggerated and likely to cause far more harm than good.
Within a few days, this article was removed. If a lifelong climate activist scientist can't change his mind, and needs censoring, where the hell ar we headed?