Those phrases, and more, were not in the original version of the song. They were added in the version of the song on the 1991 remix album “The Mix”. This changed the theme (but not the music itself) significantly from the original 1975 version, which did not contain any anti-nuclear propaganda, and instead was about literal radio, as in a medium for communication. I remember being slightly annoyed by the change as being very on-the-nose, and in effect disappearing the more interesting subject about the potential for radio as a medium for communication between people.