Can you post whatever you want on your social media without your employer being able to regulate what you say?

That's what's being asked over a post that a deputy court clerk in Minot, ND posted while on vacation. I don't think that her actual opinion is what I'm focused on. It's the fact that her employer was able to discipline her for an opinion given on social media, while she wasn't working.

This clerk also received a death threat.

Do you watch what you post in order to not get into trouble with your employer? And do you agree that the boss should be able to have an influence  on what you post on your own, free time?