I don't know.  Your statement is again, pretty general and I'm not certain the wording is true, because I'm not entirely certain what you mean.   It's pretty straightforward to say that certain speech is not protected, including hate speech, etc. This is the law.  It's already specific.  It's not my interpretation of the law, okay?  It's part of understanding the First Amendment.

My point is we communicate untrue statements about these things all the time, and it perpetuates misconceptions.  I attended a seminar once on managing conflict among staff.  The presenter, a science PhD, proudly stood in front of the room and declared to 200 people that "The First Amendment does not protect you in the workplace."    

Is that a true statement?   No.   The First Amendment does not protect people from being fired, which is what she meant.    But it does, or is supposed to, protect you in the workplace.  She had difficulty understanding why her statement was incorrect.