Yelling fire in a movie theatre is a crime. That's why there would be legal consequences. Having an opinion is not.Nothing wrong with having an opinion, but there's always a chance that expressing your opinion could come with consequences. My opinion of my boss is that she's an idiot, but I won't express that to her for fear of being fired. That would be my potential consequence. You can't yell "fire" in a crowded room without there being consequences, and I can't tell my boss they are an idiot without their being consequences. This is about as friendly and as basic as I can explain it.
It depends on the state you live in. Some places would make it almost impossible for them to fire you on those grounds alone, or else they could face consequences. I never said ESPN didn't have a right to act as they saw fit, I just find it ignorantly amusing the people on here who refer to her as a bad person strictly because she had a different view point or opinion. Did I agree with her calling Boston fans Nazi's? Nope, but it is her right to do so. Do you not find it ironic that posters here feel they have a right to their opinion, but she doesn't. Just doesn't seem very logical, but that's about as friendly and basic as I can explain it.