Reply #16: I sort of addressed this in another post

[timtom]

http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=389&topic_id=4887867&mesg_id=4893992

In the case of Father Coughlin:

He was shut down.

From Wikipedia:

"In spite of his early support for Roosevelt, Coughlin's populist message contained bitter attacks on the Roosevelt administration. The administration decided that although the First Amendment protected free speech, it did not necessarily apply to broadcasting, because the radio spectrum was a "limited national resource" and regulated as a publicly-owned commons. New regulations and restrictions were created to force Coughlin off the air. For the first time, operating permits were required of those who were regular radio broadcasters. When Coughlin's permit was denied, he was temporarily silenced."

It was temporary, as Coughlin bought air time and played recordings of him.

http://en.wikipedia.org/wiki/Charles_Coughlin