Actually do not be suprised to see this start to happen even at all different types of jobs in the US soon.
It already has......
Massachusetts man fired from corporation over Christian belief in traditional marriage
http://www.massresistance.com/docs/gen/09d/vadala/index.html
And the history teacher in FL was reprimanded in some way I can’t remember, pretty recently too. Would hope I’d remember something a short while ago.