You can't reason anyone out of a position they didn't reason themselves into in the first place.
"Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances." --First Amendment to the United States Constitution
should a Muslim cake maker be forced to make a cake with Muhammad's picture on it If I walk in and demand one? with bacon and men kissing on it as figurines? or should they be arrested for denying that?
For example, in California you can even walk into a Jewish establishment in Nazi regalia and they cannot (legally) refuse service. This would never be apparent from the statute, but the court decided that someone's Nazi political beliefs are analogous to religion and therefore they could not be denied service.