Homosexuals are afforded equal protection to participate and engage in Interstate Commerce - that's absolutely correct. No business may deny goods (defined by tangibility: a piece of cake, a box of carrots, etc...) or services (staying in a hotel, admission to a theater, etc...) to anyone based on their designation as a member of a protected class. It's also illegal to deny 'reasonable accommodations' to someone with a disability (no handicapped seating/parking) who is also a member of a protected class - all falling under the CRA of 1964.  Fortunately, those arguments have nothing to do with this case. The customer is asking the purveyor to EXCEED his obligations, which are providing baked goods, in order to 'accommodate' the customers request, as a protected person. The purveyor has no obligation to accommodate the additional request of adding a message to the cake - equally opening his doors (intangible) to all customers, and providing the (tangible) cake is his ONLY obligation.