The popularity of the radio created a new generation of super star. The radio was able to reach much wider and enthusiastic audiences than stage performances or newspapers. The radio created superstars in entertainment, sports, and politics.
Notice that the couple above are listening to the radio and reading a copy of "Social Justice". This was the newspaper of a radical political and religious figure named Father Coughlin. He was a socialist antisemite who was sympathetic to Hitler and Mussolini. He came to prominence through his radio program. At the peak of his popularity he had over 30,000,0000 Americans tuning into his broadcast.