In the US, fols do have the Right to Free Speach.
You DO NOT have a right to freedom from the consequences for expressing your bad self.
I believe this is a workplace issue not a freedom of speech issue. If you are I tried to do this at work we would be fired by our employer. The owners should have done the same thing.
The first amendment only applies if the government tries to shut down free speech and punish people for speaking freely.
It does not apply in private businesses or in a private home. If someone says what you do not like, you can toss them out.
And....I agree that that nobody is protected by the consequences of what they say as long as it is not the government shutting down or punishing people.