The Extent of Censor

In some countries television and radio programs are carefully censored for offensive language and behavior. In other countries, there is little or no censorship.
In your view, to what extent should government or any other group be able to censor television or radio programs?
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Censor in television and radio programs are mainly set to filter few scenes not decent for the viewer. In my opinion, the extent government should be able to censor is about a violence scene such as harassment or threathening. The other scenes such as alcoholic beverage should not be censored. Firstly, this will not lead to the children's imitation of the violence act in the television or radio programs. Secondly, if the other scenes are not censored, parents could come into teaching a lesson from the programs to their children.
First and foremost, sencoring the threatening scenes could prevent the children imitation. Almost all of the children learn from observing the surroundings and then mimic the action they prefer. If the violence scenes such as pointing the gun at the hostage are watched, the children may have a determination for copying such deed. For example, when I was 5 years-old, my dad told me a story about Beatrix, a 3 years-old child, son of our neighbour. One day Beatrix watched television and saw the hijacking scenes without any censor. Later, he imitate the action by using a real gun hidden in the house and try to shoot it. Fortunately, Beatrix's father came in time so no tragedy occured. The example of Beatrix playing with a gun because of the television scenes proves to me that sencor should be set on the violence scenes to prevent any possible accident.
Second reason is that if the other scenes are not censored, parents could come into teaching a lesson from the programs to their children. Some scenes, excluding the violence scenes, together with an advice from parents could be a best lesson for the...