For much of what seems to be live broadcasts on radio and television, there is actually a mechanism that delays the broadcast briefly so that inappropriate things can be bleeped out if necessary.
I think that the people on these shows like this feature. They feel like they can say whatever they want and the unseen editor will make sure the profanity does not get heard by the public. Except of course that it encourages them to be unrestrained in their profanities and it doesn't always work.
Proverbs has a lot to say about controlling what you say. Generally speaking, the fool says everything that comes to mind. The wise person puts a guard on his lips and controls his speech.
(Proverbs 29:11) A fool vents all his feelings, But a wise man holds them back.
We need to learn to think before we speak. I know from personal experience that this is no small task, but it is absolutely essential for maturity and godliness. The scriptures are very clear on this.
(Proverbs 15:28) The heart of the righteous ponders how to answer, but the mouth of the wicked pours out evil things.
Our culture values individualism and directness. People are encouraged to be themselves, to speak up, and to say what they think. And people do - in person, on the air and online. You know exactly what they are thinking - and most of it isn't worth much.
We need to learn to control our impulse to speak. We need to remain silent long enough to evaluate our feelings (especially angry ones) and control our speech. What comes out of our mouths should be purified and helpful to the hearers. Many of our feelings should not be expressed.
Our goal is to bring every thought captive to the obedience of Christ. The thoughts that do not serve Christ should not be expressed... and should be discarded after a momentary (silent) reflection.
Lord God, help us to develop a broadcast delay that lets us serve you more effectively.