Pretend they have first amendment rights to tell you to your face and through their actions that your opinion is garbage and not something they respect.
*adding: I find it amazing some people are up in arms about people getting fired for their opinions, maybe you should direct your anger to "Right to Work" laws anti-union folks have pushed down our throats everywhere?
There used to be a due process before someone was fired, I wonder where that went and who took it away?