Hackernews is living proof. Pre-election, you could voice a contrary opinion here and have a discussion. Post-election, even the faintest wrongthink shibboleth gets silently downvoted into oblivion.
A balanced discourse is (was) no longer possible. (It's getting a bit better again after some ramnifications became plain to see in some every-day situations).
While up to a ~year ago the position of "we must never ever put limits on immigration!" was hugely overrepresented in the media and by politicians. It became quite apparent that the majority of the populus does not support this stance, and that it's neither wise nor a good move to attempt the Nazikeule whenever anyone says something ever-so-slightly different from "we must never ever put limits on immigration!".