In order to make a point that is worth making, we may need facts or evidence
I believe that if we trying to make a point to an audience we need to have facts and evidence to validate our claims. Otherwise, the reader will not feel as if they have sufficient evidence to side with us.
The First Amendment guarantees the right of free speech to all Americans. Therefore, teachers have the right to express themselves freely in the classroom.
I believe this is right as long as they are not trying to impose their beliefs on the students who may have different ones. For example, if a teacher believes in God, she is able to speak about them; however, what she can't do is force a student to believe in God when they don't.
the First Amendment does not apply when a person is working for an employer. Unless there is a local law protecting employee speech, an employer can tell workers what they are and are not allowed to say on the job.
I have never given it that much thought about how our employers do this to us. I've only really considered my first amendment when I am told that I can't speak Spanish at the work place but never about anything else. Definitely food for thought.