What is an example of metaphor in the novel, A World Between?

Free media access for all is one of Pacifica's sacred principles. This provides any person or group with the whole planet as a potential audience. In one way this Pacifican principle is a metaphor for our own First Amendment rights. From another view, in an electronic — or even a print — age, it is the only way to insure "equal access" for all, regardless of wealth.