Not exactly an appropriate comparison. It's not the selling of cakes, it's the selling of a cake for one particular purpose, which is a celebration of something said people find morally repugnant.
Its a job where that scenario is predictable and foreseeable. If your religion prevents that, find a job that is compatible with your religion.
They don't reschedule the super bowl because working on Sundays was against Steve Young's religion.
"Bake or else". It's a far cry from "Give me liberty or give me death".
I don't see why Christians insist that they should be immune from generally applicable laws if they disagree with them.
And why are conservative conceptions of 'liberty' so often tied to treating other people like pieces of shit?
Why should a person with the talent and passion for baking, or photography, be forced to give it up just because they don't want to work for one particular type of customer, especially when it involves a non-necessary service that is easily obtainable elsewhere?
And if we continue with your logic, everyone who was in business before Gay Weddings became a legal thing should be grandfathered in so they don't have to comply.
It's not being immune, its about enforcing idiotic laws (or idiotic interpretation of laws) that limit one person's liberty at the expense of another's. Why is a gay persons hurt feelings over having to go to another baker greater than the baker's hurt feelings over having to bake a cake they don't want to bake?
So treating the bakers "like shit" is A-OK, because you disagree with them, right?