Please tell me exactly what threat was made? She said, according to the newspaper article, "I hope you are not ever my patient." She could have very easily been saying just that - that she didn't want to ever have to take care of him.
The cop, in this case, is a jerk and should lose HIS job.
This isn't a court of law. No proof beyond a resonable doubt is needed to come to a conclusion here. Was the cop a jerk in this case? Yeah, probably. However, the fact that when confronted with this accusation, she never denied it and instead said it was her right, is more likely the reason she was fired. She could have been saying that she didn't want to ever have to take care of him, or she didn't ever want to see him again. Did she clarify that when confronted with it?