There is right and there is wrong. Not to mention the importance of getting along. These principles collided last week when the U.S. Supreme Court ruled in favor of a Colorado baker who would not create a wedding cake for a gay couple. Lopsided at 7-2, the ruling was nevertheless narrow, predicated largely on the hostility the Colorado Civil Rights Commission had shown toward Christians in general and Jack Phillips, the Christian owner of Masterpiece Cakeshop, in particular. “The outcome of cases like this in other circumstances must await further elaboration in the courts,” wrote Justice Anthony Kennedy for the...