CS: I'd like you to please clarify which particular "consequences of free speech have been brought to heel", in this instance?

I take it you did not read the article. Jake Newsome, the person in question, was perfectly free to post "I'm glad that teacher got stabbed up." and that is what he posted. His free speech was not interfered with and his comment remained for all to see. The consequence was that it was judged to be offensive and he was imprisoned for it. What else is there to clarify?

DtG