There's a difference between refusing someone service in a restaurant because of their race, sexual orientation, or other category, and being forced to bake a cake celebrating a union that your religion teaches is sinful. Maybe a Democratic baker should be forced to make a cake celebrating Donald Trump?

And would someone having a same sex wedding ceremony really want to give their money to someone who thinks same sex acts are sinful, or is this really about forcing someone who disagrees to go against their conscience?

Regarding Notre Dame and contraception...expecting a Catholic institution to pay for birth control is as ridiculous as expecting a Jewish deli to serve you ham. If you want your employer to pay for your birth control, don't seek employment with a Catholic university instead of trying to make the institution be hypocritical by doing something against Catholic beliefs.