I could totally see silicon valley push a social credit system where you get a rating for "unspeech" which is shared on the major platforms (twitter, facebook, youtube, etc) which will affect you free speech on the net in various way (comments, shares, etc.) and perhaps sold to future employers. Platforms that fail to recognize it could then be punished through absence, similar to how videos with conservative views are de-monitized on youtube right now.
We have already seen the mass shaming campaigns of so-called "nazis" and nobody batted an eye...