There is no freedom of speech in this country when you lose your job over some breath that comes out of your mouth.
Under communism, truth becomes a victim
Don't forget: the guarantees in the 1st amendment only mean that the government cannot prosecute you for your opinions. This has nothing whatsoever to do with private employers; nor for private reactions to your comments.
Obvious example: Opinionated sports figures tend to lose their endorsement deals.
IOW, 'Free Speech' is protected, but it can be costly: you're still responsible for the (non-governmental) consequences.