In a 1959 interview with Mike Wallace, The Twilight Zone creator Rod Serling described his experiences fighting the "antiseptic, rigid" qualities of censorship.
In this clip above, he describes "precensorship"—what would now be more often described as self-censorship—the prior knowledge of the writer of what he cannot get through, and therefore shies away from.
Here's the full show:
The buck, he suggests, stops not with censors or networks, but with the audience, with whose consent these authorities operate. Here's a transcript.